fix multiple issues

Assembly-CSharp.Player.csproj

@@ -54,6 +54,8 @@
     <Compile Include="Assets\TextMesh Pro\Examples &amp; Extras\Scripts\TMPro_InstructionOverlay.cs" />
     <Compile Include="Assets\Scripts\Enemy.cs" />
     <Compile Include="Assets\Scripts\ShockwaveEffect.cs" />
+    <Compile Include="Assets\Scripts\RarityPulse.cs" />
+    <Compile Include="Assets\Scripts\FloatingWorldText.cs" />
     <Compile Include="Assets\TextMesh Pro\Examples &amp; Extras\Scripts\VertexShakeB.cs" />
     <Compile Include="Assets\Scripts\CannonAreaEffect.cs" />
     <Compile Include="Assets\TextMesh Pro\Examples &amp; Extras\Scripts\VertexJitter.cs" />

Assembly-CSharp.csproj

@@ -55,6 +55,7 @@
     <Compile Include="Assets\TextMesh Pro\Examples &amp; Extras\Scripts\TMP_ExampleScript_01.cs" />
     <Compile Include="Assets\TextMesh Pro\Examples &amp; Extras\Scripts\TMPro_InstructionOverlay.cs" />
     <Compile Include="Assets\Scripts\Enemy.cs" />
+    <Compile Include="Assets\Scripts\RarityPulse.cs" />
     <Compile Include="Assets\TextMesh Pro\Examples &amp; Extras\Scripts\VertexShakeB.cs" />
     <Compile Include="Assets\Scripts\CannonAreaEffect.cs" />
     <Compile Include="Assets\TextMesh Pro\Examples &amp; Extras\Scripts\VertexJitter.cs" />
@@ -92,6 +93,7 @@
     <Compile Include="Assets\TextMesh Pro\Examples &amp; Extras\Scripts\TextConsoleSimulator.cs" />
     <Compile Include="Assets\TextMesh Pro\Examples &amp; Extras\Scripts\TeleType.cs" />
     <Compile Include="Assets\TextMesh Pro\Examples &amp; Extras\Scripts\TMP_TextEventCheck.cs" />
+    <Compile Include="Assets\Scripts\FloatingWorldText.cs" />
     <Compile Include="Assets\TextMesh Pro\Examples &amp; Extras\Scripts\TextMeshProFloatingText.cs" />
     <None Include="Assets\TextMesh Pro\Shaders\TMPro.cginc" />
     <None Include="Assets\TextMesh Pro\Shaders\TMP_SDF-Mobile Overlay.shader" />

Assets/Scripts/Bullet.cs

@@ -143,7 +143,7 @@ public class Bullet : MonoBehaviour
         {
             Collider2D directCollider = directTarget.GetComponent<Collider2D>();
             if (directCollider != null)
-                ApplyExplosionControl(directCollider, center);
+                ApplyExplosionControl(directCollider, center - lastKnownDirection * 0.35f);
 
             int directDamage = CalculateDirectDamage(directTarget);
             directKilled = directTarget.TakeDamage(directDamage);
@@ -228,6 +228,7 @@ public class Bullet : MonoBehaviour
             if (enemyHealth == null)
                 continue;
 
+            CreateFragmentVisual(center, collider.transform.position);
             enemyHealth.TakeDamage(Mathf.Max(1, Mathf.RoundToInt(stats.directDamage * 0.35f)));
             fragmentsLeft--;
         }
@@ -249,7 +250,8 @@ public class Bullet : MonoBehaviour
         effect.Configure(
             Mathf.Max(stats.burningGroundDuration, stats.craterDuration),
             stats.burningGroundDuration > 0f ? Mathf.Max(1, Mathf.RoundToInt(stats.directDamage * 0.18f)) : 0,
-            stats.craterDuration > 0f ? stats.craterSlowMultiplier : 1f);
+            stats.craterDuration > 0f ? stats.craterSlowMultiplier : 1f,
+            stats.splashRadius * 0.72f);
     }
 
     void TriggerChainDetonation(Vector2 center)
@@ -319,4 +321,23 @@ public class Bullet : MonoBehaviour
 
         ring.GetComponent<ShockwaveEffect>().Configure(0.28f);
     }
+
+    static void CreateFragmentVisual(Vector2 start, Vector2 end)
+    {
+        GameObject fragment = new GameObject("ShrapnelFragment", typeof(LineRenderer), typeof(ShockwaveEffect));
+        fragment.transform.position = start;
+
+        LineRenderer line = fragment.GetComponent<LineRenderer>();
+        line.useWorldSpace = true;
+        line.positionCount = 2;
+        line.SetPosition(0, start);
+        line.SetPosition(1, end);
+        line.startWidth = 0.045f;
+        line.endWidth = 0.012f;
+        line.material = new Material(Shader.Find("Sprites/Default"));
+        line.startColor = new Color(0.82f, 0.84f, 0.88f, 0.95f);
+        line.endColor = new Color(0.82f, 0.84f, 0.88f, 0.1f);
+
+        fragment.GetComponent<ShockwaveEffect>().Configure(0.18f);
+    }
 }

Assets/Scripts/CannonAreaEffect.cs

@@ -9,16 +9,29 @@ public class CannonAreaEffect : MonoBehaviour
     int damagePerSecond;
     float slowMultiplier = 1f;
     float expiresAt;
+    SpriteRenderer visual;
 
-    public void Configure(float effectDuration, int burnDamagePerSecond, float craterSlowMultiplier)
+    public void Configure(float effectDuration, int burnDamagePerSecond, float craterSlowMultiplier, float radius)
     {
         duration = effectDuration;
         damagePerSecond = burnDamagePerSecond;
         slowMultiplier = Mathf.Clamp(craterSlowMultiplier, 0.1f, 1f);
         expiresAt = Time.time + duration;
+        CreateVisual(radius);
         Destroy(gameObject, duration);
     }
 
+    void Update()
+    {
+        if (visual == null || duration <= 0f)
+            return;
+
+        float remaining = Mathf.Clamp01((expiresAt - Time.time) / duration);
+        Color color = visual.color;
+        color.a = Mathf.Lerp(0f, color.a, remaining);
+        visual.color = color;
+    }
+
     void OnTriggerStay2D(Collider2D other)
     {
         if (!other.CompareTag("Enemy"))
@@ -44,4 +57,44 @@ public class CannonAreaEffect : MonoBehaviour
         health.TakeDamage(Mathf.Max(1, damagePerSecond));
         nextDamageTick[health] = Time.time + 1f;
     }
+
+    void CreateVisual(float radius)
+    {
+        GameObject visualObject = new GameObject("Visual", typeof(SpriteRenderer));
+        visualObject.transform.SetParent(transform, false);
+        visualObject.transform.localScale = Vector3.one * radius * 2f;
+
+        visual = visualObject.GetComponent<SpriteRenderer>();
+        visual.sprite = CreateCircleSprite();
+        visual.sortingOrder = -1;
+
+        if (damagePerSecond > 0 && slowMultiplier < 1f)
+            visual.color = new Color(0.95f, 0.33f, 0.12f, 0.34f);
+        else if (damagePerSecond > 0)
+            visual.color = new Color(1f, 0.32f, 0.08f, 0.34f);
+        else
+            visual.color = new Color(0.34f, 0.24f, 0.16f, 0.38f);
+    }
+
+    static Sprite CreateCircleSprite()
+    {
+        const int size = 64;
+        Texture2D texture = new Texture2D(size, size, TextureFormat.RGBA32, false);
+        texture.filterMode = FilterMode.Bilinear;
+        Vector2 center = new Vector2((size - 1) * 0.5f, (size - 1) * 0.5f);
+        float radius = size * 0.46f;
+
+        for (int y = 0; y < size; y++)
+        {
+            for (int x = 0; x < size; x++)
+            {
+                float distance = Vector2.Distance(new Vector2(x, y), center);
+                float alpha = Mathf.Clamp01((radius - distance) / 5f);
+                texture.SetPixel(x, y, new Color(1f, 1f, 1f, alpha));
+            }
+        }
+
+        texture.Apply();
+        return Sprite.Create(texture, new Rect(0f, 0f, size, size), new Vector2(0.5f, 0.5f), size);
+    }
 }

Assets/Scripts/Enemy.cs

@@ -7,6 +7,8 @@ public class Enemy : MonoBehaviour
     private EnemyHealth enemyHealth;
     private float slowMultiplier = 1f;
     private float slowEndTime;
+    private Vector2 knockbackVelocity;
+    private float knockbackEndTime;
 
     void Start()
     {
@@ -25,12 +27,21 @@ public class Enemy : MonoBehaviour
         if (Time.time >= slowEndTime)
             slowMultiplier = 1f;
 
+        if (Time.time < knockbackEndTime && knockbackVelocity.sqrMagnitude > 0.01f)
+        {
+            transform.position += (Vector3)(knockbackVelocity * Time.deltaTime);
+            knockbackVelocity = Vector2.Lerp(knockbackVelocity, Vector2.zero, 8f * Time.deltaTime);
+            return;
+        }
+
         transform.position = Vector2.MoveTowards(transform.position, tower.position, speed * slowMultiplier * Time.deltaTime);
         if (Vector2.Distance(transform.position, tower.position) < 0.5f)
         {
             int damageDealt = enemyHealth.GetCurrentHealth();
             tower.GetComponent<TowerHealth>().TakeDamage(damageDealt);
             enemyHealth.NotifySpawner();
+            if (enemyHealth.isBoss && enemyHealth.spawner != null)
+                enemyHealth.spawner.HideBossHealth(enemyHealth);
             Destroy(gameObject);
         }
     }
@@ -47,6 +58,8 @@ public class Enemy : MonoBehaviour
         if (direction.sqrMagnitude <= Mathf.Epsilon)
             return;
 
-        transform.position += (Vector3)(direction * distance);
+        transform.position += (Vector3)(direction * distance * 0.45f);
+        knockbackVelocity = direction * Mathf.Max(2.5f, distance * 12f);
+        knockbackEndTime = Time.time + 0.22f;
     }
 }

Assets/Scripts/EnemyHealth.cs

@@ -1,3 +1,4 @@
+using TMPro;
 using UnityEngine;
 
 public class EnemyHealth : MonoBehaviour
@@ -5,6 +6,7 @@ public class EnemyHealth : MonoBehaviour
     public int health = 1;
     public GameObject shatterEffectPrefab;
     public EnemySpawner spawner;
+    public bool isBoss;
     private int maxHealth = 1;
 
     public bool TakeDamage(int damage)
@@ -12,9 +14,16 @@ public class EnemyHealth : MonoBehaviour
         if (health <= 0)
             return false;
 
+        ShowDamageNumber(damage);
         health -= damage;
+        if (isBoss && spawner != null)
+            spawner.UpdateBossHealth(this, health, maxHealth);
+
         if (health <= 0)
         {
+            if (isBoss && spawner != null)
+                spawner.HideBossHealth(this);
+
             NotifySpawner();
             ShatterEffect();
             NotifyUpgradeManager();
@@ -34,6 +43,8 @@ public class EnemyHealth : MonoBehaviour
     {
         health = newHealth;
         maxHealth = Mathf.Max(1, newHealth);
+        if (isBoss && spawner != null)
+            spawner.UpdateBossHealth(this, health, maxHealth);
     }
 
     public float GetHealthPercent()
@@ -45,6 +56,8 @@ public class EnemyHealth : MonoBehaviour
     {
         if (spawner != null)
         {
+            if (isBoss)
+                spawner.HideBossHealth(this);
             spawner.EnemyDefeated();
         }
     }
@@ -65,4 +78,18 @@ public class EnemyHealth : MonoBehaviour
             Instantiate(shatterEffectPrefab, transform.position, Quaternion.identity);
         }
     }
+
+    void ShowDamageNumber(int damage)
+    {
+        GameObject textObject = new GameObject("EnemyDamageText", typeof(TextMeshPro));
+        textObject.transform.position = transform.position + new Vector3(Random.Range(-0.18f, 0.18f), 0.72f, 0f);
+
+        TextMeshPro text = textObject.GetComponent<TextMeshPro>();
+        text.text = damage.ToString();
+        text.fontSize = 3.1f;
+        text.alignment = TextAlignmentOptions.Center;
+        text.color = Color.white;
+        text.sortingOrder = 50;
+        textObject.AddComponent<FloatingWorldText>().Configure(0.75f, new Vector3(0f, 0.58f, 0f));
+    }
 }

Assets/Scripts/EnemySpawner.cs

@@ -21,10 +21,14 @@ public class EnemySpawner : MonoBehaviour
     private int enemiesRemaining = 0;
     private int baseEnemyCount = 5;
     private int enemyCountIncrease = 3;
-    private float enemySpeed = 1.5f;
+    private float enemySpeed = 1.16f;
     private int enemyBaseHP = 1;
     private float maxEnemySpeed = 6f;
     private int maxEnemyHP = 20;
+    private RectTransform bossHealthBar;
+    private Image bossHealthFill;
+    private TextMeshProUGUI bossHealthText;
+    private EnemyHealth activeBoss;
 
     void Start()
     {
@@ -74,9 +78,8 @@ public class EnemySpawner : MonoBehaviour
         Enemy enemyComponent = newEnemy.GetComponent<Enemy>();
         if (enemyComponent != null)
         {
-            // Lower speed scale to 0.1f
+            float waveSpeedBonus = currentWave * 0.028f;
-            float waveSpeedBonus = currentWave * 0.1f;
+            float stageSpeedBonus = (currentStage - 1) * 0.025f;
-            float stageSpeedBonus = (currentStage - 1) * 0.08f;
             enemyComponent.speed = Mathf.Min(maxEnemySpeed, enemySpeed + waveSpeedBonus + stageSpeedBonus);
             if (boss)
                 enemyComponent.speed *= 0.72f;
@@ -85,14 +88,14 @@ public class EnemySpawner : MonoBehaviour
         EnemyHealth enemyHealth = newEnemy.GetComponent<EnemyHealth>();
         if (enemyHealth != null)
         {
-            // For HP: baseHP + wave * 0.3 (round it)
+            int scaledHP = enemyBaseHP + Mathf.FloorToInt(currentWave * 0.14f) + Mathf.FloorToInt((currentStage - 1) * 0.25f);
-            int scaledHP = enemyBaseHP + Mathf.RoundToInt(currentWave * 0.3f) + Mathf.RoundToInt((currentStage - 1) * 0.5f);
             if (boss)
-                scaledHP = Mathf.RoundToInt((scaledHP + currentStage + currentWave) * 4.5f);
+                scaledHP = Mathf.RoundToInt((scaledHP + currentStage + currentWave * 0.48f) * 3.05f);
             scaledHP = Mathf.Min(boss ? maxEnemyHP * 4 : maxEnemyHP, scaledHP);
             enemyHealth.SetHealth(scaledHP);
 
             enemyHealth.spawner = this;
+            enemyHealth.isBoss = boss;
         }
 
         if (boss)
@@ -102,6 +105,44 @@ public class EnemySpawner : MonoBehaviour
             SpriteRenderer spriteRenderer = newEnemy.GetComponent<SpriteRenderer>();
             if (spriteRenderer != null)
                 spriteRenderer.color = new Color(0.95f, 0.32f, 0.28f, 1f);
+
+            activeBoss = enemyHealth;
+            EnsureBossHealthBar();
+            UpdateBossHealth(enemyHealth, enemyHealth.GetCurrentHealth(), enemyHealth.GetCurrentHealth());
+        }
+        else
+        {
+            ApplyEnemyVariant(newEnemy, enemyComponent, enemyHealth);
+        }
+    }
+
+    void ApplyEnemyVariant(GameObject enemyObject, Enemy enemyComponent, EnemyHealth enemyHealth)
+    {
+        if (enemyComponent == null || enemyHealth == null)
+            return;
+
+        float waveFactor = Mathf.Clamp01(currentWave / 15f);
+        float fastChance = Mathf.Lerp(0.08f, 0.24f, waveFactor);
+        float tankChance = Mathf.Lerp(0.05f, 0.2f, waveFactor);
+        float roll = Random.value;
+
+        SpriteRenderer spriteRenderer = enemyObject.GetComponent<SpriteRenderer>();
+        if (roll < fastChance)
+        {
+            enemyObject.name = "Fast Enemy";
+            enemyComponent.speed *= 1.65f;
+            enemyObject.transform.localScale *= 0.82f;
+            if (spriteRenderer != null)
+                spriteRenderer.color = new Color(0.35f, 0.78f, 1f, 1f);
+        }
+        else if (roll < fastChance + tankChance)
+        {
+            enemyObject.name = "Tank Enemy";
+            enemyComponent.speed *= 0.62f;
+            enemyObject.transform.localScale *= 1.32f;
+            enemyHealth.SetHealth(Mathf.Max(2, Mathf.RoundToInt(enemyHealth.GetCurrentHealth() * 2.35f)));
+            if (spriteRenderer != null)
+                spriteRenderer.color = new Color(0.78f, 0.56f, 0.28f, 1f);
         }
     }
 
@@ -137,7 +178,7 @@ public class EnemySpawner : MonoBehaviour
             UpgradeManager upgradeManager = FindAnyObjectByType<UpgradeManager>();
             if (upgradeManager != null)
             {
-                upgradeManager.ShowWaveUpgradeChoice(PrepareNextWave);
+                StartCoroutine(ShowUpgradeChoiceAfterIntermission(upgradeManager, IsBossWave(currentWave)));
                 return;
             }
 
@@ -152,6 +193,15 @@ public class EnemySpawner : MonoBehaviour
         UpdateWaveText();
     }
 
+    IEnumerator ShowUpgradeChoiceAfterIntermission(UpgradeManager upgradeManager, bool bossWave)
+    {
+        yield return new WaitForSeconds(1f);
+        if (upgradeManager != null)
+            upgradeManager.ShowWaveUpgradeChoice(PrepareNextWave, bossWave);
+        else
+            PrepareNextWave();
+    }
+
     int GetNormalEnemyCount(int wave)
     {
         return baseEnemyCount + wave * enemyCountIncrease + Mathf.Max(0, currentStage - 1);
@@ -171,12 +221,47 @@ public class EnemySpawner : MonoBehaviour
     {
         stageComplete = true;
         isSpawning = false;
+        HideBossHealth(activeBoss);
         int nextStage = currentStage + 1;
         PlayerPrefs.SetInt(CurrentStageKey, nextStage);
         PlayerPrefs.Save();
         ShowWinScreen(nextStage);
     }
 
+    public void UpdateBossHealth(EnemyHealth boss, int currentHealth, int maxHealth)
+    {
+        if (boss == null)
+            return;
+
+        activeBoss = boss;
+        EnsureBossHealthBar();
+        if (bossHealthBar != null)
+            bossHealthBar.gameObject.SetActive(true);
+
+        float percent = maxHealth <= 0 ? 0f : Mathf.Clamp01((float)Mathf.Max(0, currentHealth) / maxHealth);
+        if (bossHealthFill != null)
+        {
+            bossHealthFill.fillAmount = 1f;
+            bossHealthFill.color = Color.Lerp(new Color(0.55f, 0.05f, 0.06f, 1f), new Color(0.95f, 0.2f, 0.18f, 1f), percent);
+            RectTransform fillRect = bossHealthFill.rectTransform;
+            fillRect.anchorMax = new Vector2(percent, fillRect.anchorMax.y);
+            fillRect.offsetMax = Vector2.zero;
+        }
+
+        if (bossHealthText != null)
+            bossHealthText.text = $"BOSS {Mathf.Max(0, currentHealth)}/{maxHealth}";
+    }
+
+    public void HideBossHealth(EnemyHealth boss)
+    {
+        if (boss != null && activeBoss != null && boss != activeBoss)
+            return;
+
+        activeBoss = null;
+        if (bossHealthBar != null)
+            bossHealthBar.gameObject.SetActive(false);
+    }
+
     void ShowWinScreen(int nextStage)
     {
         Time.timeScale = 0f;
@@ -214,6 +299,66 @@ public class EnemySpawner : MonoBehaviour
         SceneManager.LoadScene("MainMenu");
     }
 
+    void EnsureBossHealthBar()
+    {
+        if (bossHealthBar != null)
+            return;
+
+        Canvas canvas = FindAnyObjectByType<Canvas>();
+        if (canvas == null)
+            return;
+
+        Transform existing = canvas.transform.Find("BossHealthBar");
+        bossHealthBar = existing != null ? existing.GetComponent<RectTransform>() : CreateRect("BossHealthBar", canvas.transform);
+        bossHealthBar.anchorMin = new Vector2(0.5f, 1f);
+        bossHealthBar.anchorMax = new Vector2(0.5f, 1f);
+        bossHealthBar.pivot = new Vector2(0.5f, 1f);
+        bossHealthBar.anchoredPosition = new Vector2(0f, -126f);
+        bossHealthBar.sizeDelta = new Vector2(360f, 48f);
+        bossHealthBar.gameObject.SetActive(false);
+
+        Image panel = bossHealthBar.GetComponent<Image>();
+        if (panel == null)
+            panel = bossHealthBar.gameObject.AddComponent<Image>();
+        panel.color = new Color(0.05f, 0.03f, 0.035f, 0.88f);
+
+        RectTransform track = bossHealthBar.Find("Track")?.GetComponent<RectTransform>();
+        if (track == null)
+        {
+            track = CreateRect("Track", bossHealthBar);
+            track.anchorMin = new Vector2(0f, 0f);
+            track.anchorMax = new Vector2(1f, 0f);
+            track.pivot = new Vector2(0.5f, 0f);
+            track.anchoredPosition = new Vector2(0f, 8f);
+            track.sizeDelta = new Vector2(-24f, 16f);
+            Image trackImage = track.gameObject.AddComponent<Image>();
+            trackImage.color = new Color(0.16f, 0.08f, 0.08f, 1f);
+        }
+
+        bossHealthFill = track.Find("Fill")?.GetComponent<Image>();
+        if (bossHealthFill == null)
+        {
+            RectTransform fill = CreateRect("Fill", track);
+            fill.anchorMin = Vector2.zero;
+            fill.anchorMax = Vector2.one;
+            fill.offsetMin = Vector2.zero;
+            fill.offsetMax = Vector2.zero;
+            bossHealthFill = fill.gameObject.AddComponent<Image>();
+        }
+        bossHealthFill.type = Image.Type.Simple;
+
+        bossHealthText = bossHealthBar.Find("Text")?.GetComponent<TextMeshProUGUI>();
+        if (bossHealthText == null)
+        {
+            bossHealthText = CreateOverlayText("Text", bossHealthBar, "BOSS", 15f, FontStyles.Bold);
+            bossHealthText.rectTransform.anchorMin = new Vector2(0f, 1f);
+            bossHealthText.rectTransform.anchorMax = new Vector2(1f, 1f);
+            bossHealthText.rectTransform.pivot = new Vector2(0.5f, 1f);
+            bossHealthText.rectTransform.anchoredPosition = new Vector2(0f, -4f);
+            bossHealthText.rectTransform.sizeDelta = new Vector2(-16f, 20f);
+        }
+    }
+
     void EnsureWaveText()
     {
         if (waveText != null)
@@ -345,6 +490,14 @@ public class EnemySpawner : MonoBehaviour
         return button;
     }
 
+    static RectTransform CreateRect(string name, Transform parent)
+    {
+        GameObject obj = new GameObject(name, typeof(RectTransform));
+        RectTransform rect = obj.GetComponent<RectTransform>();
+        rect.SetParent(parent, false);
+        return rect;
+    }
+
     static void PlaceOverlayRect(RectTransform rect, float x, float y, float width, float height)
     {
         rect.anchorMin = new Vector2(0.5f, 0.5f);

Assets/Scripts/FloatingWorldText.cs

@@ -0,0 +1,39 @@
+using TMPro;
+using UnityEngine;
+
+public class FloatingWorldText : MonoBehaviour
+{
+    TextMeshPro text;
+    Vector3 startPosition;
+    Vector3 offset = new Vector3(0f, 0.6f, 0f);
+    Color startColor = Color.white;
+    float duration = 0.75f;
+    float elapsed;
+
+    public void Configure(float fadeDuration, Vector3 moveOffset)
+    {
+        duration = Mathf.Max(0.05f, fadeDuration);
+        offset = moveOffset;
+    }
+
+    void Awake()
+    {
+        text = GetComponent<TextMeshPro>();
+        startPosition = transform.position;
+        if (text != null)
+            startColor = text.color;
+    }
+
+    void Update()
+    {
+        elapsed += Time.deltaTime;
+        float t = Mathf.Clamp01(elapsed / duration);
+        transform.position = Vector3.Lerp(startPosition, startPosition + offset, t);
+
+        if (text != null)
+            text.color = new Color(startColor.r, startColor.g, startColor.b, 1f - t);
+
+        if (elapsed >= duration)
+            Destroy(gameObject);
+    }
+}

Assets/Scripts/RarityPulse.cs

@@ -0,0 +1,33 @@
+using UnityEngine;
+using UnityEngine.UI;
+
+public class RarityPulse : MonoBehaviour
+{
+    Outline outline;
+    Color baseColor = Color.white;
+
+    public void Configure(Outline targetOutline, Color color)
+    {
+        outline = targetOutline;
+        baseColor = color;
+    }
+
+    void Awake()
+    {
+        if (outline == null)
+            outline = GetComponent<Outline>();
+    }
+
+    void Update()
+    {
+        if (outline == null)
+            return;
+
+        float pulse = 0.55f + Mathf.Sin(Time.unscaledTime * 4.5f) * 0.25f;
+        Color color = baseColor;
+        color.a = Mathf.Clamp01(pulse);
+        outline.effectColor = color;
+        float distance = 2.5f + Mathf.Sin(Time.unscaledTime * 4.5f) * 0.8f;
+        outline.effectDistance = new Vector2(distance, -distance);
+    }
+}

Assets/Scripts/Tower.cs

@@ -38,6 +38,8 @@ public class Tower : MonoBehaviour
     private int shotsFired;
     private float cooldownUntil;
     private bool cannonBaselineApplied;
+    private SpriteRenderer rangeCircle;
+    private Camera mainCamera;
     public int extraBullets = 0;  // For "Shoot +1 bullet"
     public bool homingEnabled = false;
     public bool ricochetEnabled = false;
@@ -51,10 +53,15 @@ public class Tower : MonoBehaviour
     void Start()
     {
         ApplyCannonBaseline();
+        EnsureRangeCircle();
+        FitCameraToRange();
     }
 
     void Update()
     {
+        UpdateRangeCircle();
+        FitCameraToRange();
+
         if (Time.time < cooldownUntil)
             return;
 
@@ -65,6 +72,69 @@ public class Tower : MonoBehaviour
         }
     }
 
+    void EnsureRangeCircle()
+    {
+        if (rangeCircle != null)
+            return;
+
+        GameObject rangeObject = new GameObject("TowerRangeCircle", typeof(SpriteRenderer));
+        rangeObject.transform.position = transform.position;
+        rangeCircle = rangeObject.GetComponent<SpriteRenderer>();
+        rangeCircle.sprite = CreateCircleSprite();
+        rangeCircle.color = new Color(0.72f, 0.74f, 0.78f, 0.16f);
+        rangeCircle.sortingOrder = -10;
+        UpdateRangeCircle();
+    }
+
+    void UpdateRangeCircle()
+    {
+        if (rangeCircle == null)
+            return;
+
+        rangeCircle.transform.position = transform.position;
+        rangeCircle.transform.localScale = Vector3.one * (attackRange * 2.08f);
+    }
+
+    void FitCameraToRange()
+    {
+        if (mainCamera == null)
+            mainCamera = Camera.main;
+        if (mainCamera == null || !mainCamera.orthographic)
+            return;
+
+        float padding = 0.45f;
+        float verticalSize = attackRange + padding;
+        float horizontalSize = (attackRange + padding) / Mathf.Max(0.1f, mainCamera.aspect);
+        mainCamera.orthographicSize = Mathf.Max(5.5f, verticalSize, horizontalSize);
+        Vector3 cameraPosition = transform.position;
+        cameraPosition.z = mainCamera.transform.position.z;
+        mainCamera.transform.position = cameraPosition;
+    }
+
+    static Sprite CreateCircleSprite()
+    {
+        const int size = 128;
+        Texture2D texture = new Texture2D(size, size, TextureFormat.RGBA32, false);
+        texture.filterMode = FilterMode.Bilinear;
+        Vector2 center = new Vector2((size - 1) * 0.5f, (size - 1) * 0.5f);
+        float radius = size * 0.47f;
+
+        for (int y = 0; y < size; y++)
+        {
+            for (int x = 0; x < size; x++)
+            {
+                float distance = Vector2.Distance(new Vector2(x, y), center);
+                float fillAlpha = distance <= radius ? 0.75f : 0f;
+                float edge = Mathf.Clamp01(1f - Mathf.Abs(distance - radius) / 2.2f);
+                float alpha = Mathf.Max(fillAlpha * 0.18f, edge);
+                texture.SetPixel(x, y, new Color(1f, 1f, 1f, alpha));
+            }
+        }
+
+        texture.Apply();
+        return Sprite.Create(texture, new Rect(0f, 0f, size, size), new Vector2(0.5f, 0.5f), size);
+    }
+
     void ApplyCannonBaseline()
     {
         if (cannonBaselineApplied)

Assets/Scripts/TowerHealth.cs

@@ -1,6 +1,7 @@
 using UnityEngine;
 using TMPro;
 using UnityEngine.UI;
+using UnityEngine.SceneManagement;
 using System.Collections;
 
 public class TowerHealth : MonoBehaviour
@@ -15,6 +16,7 @@ public class TowerHealth : MonoBehaviour
     public Color lowHealthColor = new Color(0.95f, 0.22f, 0.18f);
 
     private int currentHealth;
+    private bool isDead;
     private SpriteRenderer spriteRenderer;
 
     void Start()
@@ -32,6 +34,9 @@ public class TowerHealth : MonoBehaviour
 
     public void TakeDamage(int damage)
     {
+        if (isDead)
+            return;
+
         currentHealth -= damage;
         if (currentHealth < 0) currentHealth = 0;
         ShowFloatingDamage(damage);
@@ -39,7 +44,8 @@ public class TowerHealth : MonoBehaviour
 
         if (currentHealth <= 0)
         {
-            Debug.Log("Tower Destroyed! Game Over.");
+            isDead = true;
+            ShowStageLostScreen();
         }
     }
 
@@ -49,8 +55,12 @@ public class TowerHealth : MonoBehaviour
 
         if (healthFill != null)
         {
-            healthFill.fillAmount = healthPercentage;
+            healthFill.fillAmount = 1f;
             healthFill.color = Color.Lerp(lowHealthColor, highHealthColor, healthPercentage);
+
+            RectTransform fillRect = healthFill.rectTransform;
+            fillRect.anchorMax = new Vector2(healthPercentage, fillRect.anchorMax.y);
+            fillRect.offsetMax = Vector2.zero;
         }
 
         if (healthText != null)
@@ -152,6 +162,56 @@ public class TowerHealth : MonoBehaviour
                 healthFill.fillOrigin = (int)Image.OriginHorizontal.Left;
             }
         }
+
+        healthFill.type = Image.Type.Simple;
+    }
+
+    void ShowStageLostScreen()
+    {
+        Time.timeScale = 0f;
+
+        Canvas canvas = FindAnyObjectByType<Canvas>();
+        if (canvas == null)
+            return;
+
+        GameObject overlay = new GameObject("StageLostOverlay", typeof(RectTransform), typeof(CanvasRenderer), typeof(Image));
+        RectTransform rect = overlay.GetComponent<RectTransform>();
+        rect.SetParent(canvas.transform, false);
+        rect.anchorMin = Vector2.zero;
+        rect.anchorMax = Vector2.one;
+        rect.offsetMin = Vector2.zero;
+        rect.offsetMax = Vector2.zero;
+        rect.SetAsLastSibling();
+
+        Image background = overlay.GetComponent<Image>();
+        background.color = new Color(0f, 0f, 0f, 0.8f);
+        background.raycastTarget = true;
+
+        TextMeshProUGUI title = CreateText("Title", rect, "STAGE LOST", 44f);
+        title.alignment = TextAlignmentOptions.Center;
+        PlaceOverlayRect(title.rectTransform, 0f, 64f, 420f, 68f);
+
+        TextMeshProUGUI subtitle = CreateText("Subtitle", rect, "Wave progress and upgrades were lost.", 19f);
+        subtitle.fontStyle = FontStyles.Normal;
+        subtitle.alignment = TextAlignmentOptions.Center;
+        PlaceOverlayRect(subtitle.rectTransform, 0f, 12f, 520f, 42f);
+
+        Button menuButton = CreateOverlayButton("MenuButton", rect, "MAIN MENU", ReturnToMenu);
+        PlaceOverlayRect(menuButton.GetComponent<RectTransform>(), 0f, -64f, 220f, 54f);
+
+        StartCoroutine(ReturnToMenuAfterDelay());
+    }
+
+    IEnumerator ReturnToMenuAfterDelay()
+    {
+        yield return new WaitForSecondsRealtime(2.25f);
+        ReturnToMenu();
+    }
+
+    void ReturnToMenu()
+    {
+        Time.timeScale = 1f;
+        SceneManager.LoadScene("MainMenu");
     }
 
     static RectTransform CreateRect(string name, Transform parent)
@@ -177,6 +237,44 @@ public class TowerHealth : MonoBehaviour
         return label;
     }
 
+    static Button CreateOverlayButton(string name, Transform parent, string label, UnityEngine.Events.UnityAction onClick)
+    {
+        GameObject obj = new GameObject(name, typeof(RectTransform), typeof(CanvasRenderer), typeof(Image), typeof(Button));
+        RectTransform rect = obj.GetComponent<RectTransform>();
+        rect.SetParent(parent, false);
+
+        Image image = obj.GetComponent<Image>();
+        image.color = new Color(0.18f, 0.5f, 0.74f, 1f);
+
+        Button button = obj.GetComponent<Button>();
+        ColorBlock colors = button.colors;
+        colors.normalColor = image.color;
+        colors.highlightedColor = new Color(0.25f, 0.62f, 0.88f, 1f);
+        colors.pressedColor = new Color(0.12f, 0.36f, 0.56f, 1f);
+        colors.selectedColor = colors.highlightedColor;
+        colors.disabledColor = new Color(0.16f, 0.18f, 0.22f, 1f);
+        colors.colorMultiplier = 1f;
+        button.colors = colors;
+        button.onClick.AddListener(onClick);
+
+        TextMeshProUGUI text = CreateText("Text", rect, label, 18f);
+        text.alignment = TextAlignmentOptions.Center;
+        text.rectTransform.anchorMin = Vector2.zero;
+        text.rectTransform.anchorMax = Vector2.one;
+        text.rectTransform.offsetMin = Vector2.zero;
+        text.rectTransform.offsetMax = Vector2.zero;
+        return button;
+    }
+
+    static void PlaceOverlayRect(RectTransform rect, float x, float y, float width, float height)
+    {
+        rect.anchorMin = new Vector2(0.5f, 0.5f);
+        rect.anchorMax = new Vector2(0.5f, 0.5f);
+        rect.pivot = new Vector2(0.5f, 0.5f);
+        rect.anchoredPosition = new Vector2(x, y);
+        rect.sizeDelta = new Vector2(width, height);
+    }
+
     void ShowFloatingDamage(int damage)
     {
         if (floatingTextPrefab != null)

Assets/Scripts/UpgradeManager.cs

@@ -41,9 +41,12 @@ public class UpgradeManager : MonoBehaviour
     readonly Dictionary<UpgradeCard.UpgradeType, int> upgradeCosts = new Dictionary<UpgradeCard.UpgradeType, int>();
 
     GameObject choiceOverlay;
+    RectTransform currentCardRow;
+    bool currentGuaranteeEpicOrHigher;
     Action currentChoiceComplete;
     int bonusBitsPerKill;
     float hitBitChance;
+    int rerollCost = 1;
 
     static readonly CardDefinition[] CannonCards =
     {
@@ -99,7 +102,7 @@ public class UpgradeManager : MonoBehaviour
         }
     }
 
-    public void ShowWaveUpgradeChoice(Action onChoiceComplete)
+    public void ShowWaveUpgradeChoice(Action onChoiceComplete, bool guaranteeEpicOrHigher = false)
     {
         if (choiceOverlay != null)
             return;
@@ -107,8 +110,10 @@ public class UpgradeManager : MonoBehaviour
         InitializeUpgrades();
         EnsureBitsText();
         currentChoiceComplete = onChoiceComplete;
+        currentGuaranteeEpicOrHigher = guaranteeEpicOrHigher;
+        rerollCost = 1;
 
-        List<UpgradeOffer> offers = BuildOffers();
+        List<UpgradeOffer> offers = BuildOffers(guaranteeEpicOrHigher);
         if (offers.Count == 0)
         {
             CompleteChoice();
@@ -117,23 +122,9 @@ public class UpgradeManager : MonoBehaviour
 
         Time.timeScale = 0f;
         choiceOverlay = CreateOverlay(offers[0].isFree);
-        RectTransform row = CreateRect("UpgradeChoices", choiceOverlay.transform);
+        currentCardRow = CreateChoiceRow(choiceOverlay.transform);
-        row.anchorMin = new Vector2(0.5f, 0.5f);
+        PopulateChoiceCards(offers);
-        row.anchorMax = new Vector2(0.5f, 0.5f);
+        CreateRerollButton(choiceOverlay.transform);
-        row.pivot = new Vector2(0.5f, 0.5f);
-        row.anchoredPosition = new Vector2(0f, -12f);
-        row.sizeDelta = new Vector2(700f, 212f);
-
-        HorizontalLayoutGroup layout = row.gameObject.AddComponent<HorizontalLayoutGroup>();
-        layout.spacing = 16f;
-        layout.childAlignment = TextAnchor.MiddleCenter;
-        layout.childControlWidth = true;
-        layout.childControlHeight = true;
-        layout.childForceExpandWidth = false;
-        layout.childForceExpandHeight = false;
-
-        foreach (UpgradeOffer offer in offers)
-            CreateChoiceCard(offer, row);
     }
 
     public void ShowSpecialUpgradeChoice()
@@ -160,7 +151,7 @@ public class UpgradeManager : MonoBehaviour
         }
     }
 
-    List<UpgradeOffer> BuildOffers()
+    List<UpgradeOffer> BuildOffers(bool guaranteeEpicOrHigher)
     {
         List<UpgradeOffer> paidOffers = new List<UpgradeOffer>();
         foreach (CardDefinition card in CannonCards)
@@ -182,7 +173,7 @@ public class UpgradeManager : MonoBehaviour
         }
 
         if (paidOffers.Count > 0)
-            return PickRandomWeighted(paidOffers, 3);
+            return PickRandomWeighted(paidOffers, 3, guaranteeEpicOrHigher);
 
         return new List<UpgradeOffer>
         {
@@ -207,11 +198,28 @@ public class UpgradeManager : MonoBehaviour
         };
     }
 
-    static List<UpgradeOffer> PickRandomWeighted(List<UpgradeOffer> source, int count)
+    static List<UpgradeOffer> PickRandomWeighted(List<UpgradeOffer> source, int count, bool guaranteeEpicOrHigher)
     {
         List<UpgradeOffer> pool = new List<UpgradeOffer>(source);
         List<UpgradeOffer> result = new List<UpgradeOffer>();
 
+        if (guaranteeEpicOrHigher)
+        {
+            List<UpgradeOffer> highRarity = new List<UpgradeOffer>();
+            foreach (UpgradeOffer offer in pool)
+            {
+                if (IsEpicOrHigher(offer.rarity))
+                    highRarity.Add(offer);
+            }
+
+            if (highRarity.Count > 0)
+            {
+                UpgradeOffer guaranteed = highRarity[UnityEngine.Random.Range(0, highRarity.Count)];
+                result.Add(guaranteed);
+                pool.Remove(guaranteed);
+            }
+        }
+
         while (pool.Count > 0 && result.Count < count)
         {
             float totalWeight = 0f;
@@ -237,6 +245,11 @@ public class UpgradeManager : MonoBehaviour
         return result;
     }
 
+    static bool IsEpicOrHigher(string rarity)
+    {
+        return rarity == "Epic" || rarity == "Legendary";
+    }
+
     static float GetRarityWeight(string rarity)
     {
         switch (rarity)
@@ -265,6 +278,12 @@ public class UpgradeManager : MonoBehaviour
         Image image = cardObject.GetComponent<Image>();
         image.color = offer.isFree ? new Color(0.11f, 0.17f, 0.13f, 0.98f) : GetRarityColor(offer.rarity);
 
+        Outline outline = cardObject.AddComponent<Outline>();
+        outline.effectDistance = new Vector2(3f, -3f);
+        outline.effectColor = GetRarityBorderColor(offer.rarity);
+        RarityPulse pulse = cardObject.AddComponent<RarityPulse>();
+        pulse.Configure(outline, GetRarityBorderColor(offer.rarity));
+
         Button button = cardObject.GetComponent<Button>();
         ColorBlock colors = button.colors;
         colors.normalColor = image.color;
@@ -288,6 +307,77 @@ public class UpgradeManager : MonoBehaviour
         PlaceCardText(footer.rectTransform, 12f, 12f, -12f, 28f, false);
     }
 
+    RectTransform CreateChoiceRow(Transform parent)
+    {
+        RectTransform row = CreateRect("UpgradeChoices", parent);
+        row.anchorMin = new Vector2(0.5f, 0.5f);
+        row.anchorMax = new Vector2(0.5f, 0.5f);
+        row.pivot = new Vector2(0.5f, 0.5f);
+        row.anchoredPosition = new Vector2(0f, -12f);
+        row.sizeDelta = new Vector2(700f, 212f);
+
+        HorizontalLayoutGroup layout = row.gameObject.AddComponent<HorizontalLayoutGroup>();
+        layout.spacing = 16f;
+        layout.childAlignment = TextAnchor.MiddleCenter;
+        layout.childControlWidth = true;
+        layout.childControlHeight = true;
+        layout.childForceExpandWidth = false;
+        layout.childForceExpandHeight = false;
+        return row;
+    }
+
+    void PopulateChoiceCards(List<UpgradeOffer> offers)
+    {
+        if (currentCardRow == null)
+            return;
+
+        for (int i = currentCardRow.childCount - 1; i >= 0; i--)
+            Destroy(currentCardRow.GetChild(i).gameObject);
+
+        foreach (UpgradeOffer offer in offers)
+            CreateChoiceCard(offer, currentCardRow);
+    }
+
+    void CreateRerollButton(Transform parent)
+    {
+        Button rerollButton = CreateButton("RerollButton", parent, GetRerollLabel(), RerollOffers);
+        RectTransform rect = rerollButton.GetComponent<RectTransform>();
+        rect.anchorMin = new Vector2(0.5f, 0.5f);
+        rect.anchorMax = new Vector2(0.5f, 0.5f);
+        rect.pivot = new Vector2(0.5f, 0.5f);
+        rect.anchoredPosition = new Vector2(0f, -156f);
+        rect.sizeDelta = new Vector2(190f, 42f);
+        rerollButton.interactable = bits >= rerollCost;
+    }
+
+    void RerollOffers()
+    {
+        if (bits < rerollCost || currentCardRow == null)
+            return;
+
+        bits -= rerollCost;
+        rerollCost++;
+        UpdateBitsText();
+        PopulateChoiceCards(BuildOffers(currentGuaranteeEpicOrHigher));
+
+        Transform rerollTransform = choiceOverlay != null ? choiceOverlay.transform.Find("RerollButton") : null;
+        if (rerollTransform != null)
+        {
+            TextMeshProUGUI label = rerollTransform.GetComponentInChildren<TextMeshProUGUI>();
+            if (label != null)
+                label.text = GetRerollLabel();
+
+            Button button = rerollTransform.GetComponent<Button>();
+            if (button != null)
+                button.interactable = bits >= rerollCost;
+        }
+    }
+
+    string GetRerollLabel()
+    {
+        return $"REROLL ({rerollCost} BIT{(rerollCost == 1 ? "" : "S")})";
+    }
+
     static Color GetRarityColor(string rarity)
     {
         switch (rarity)
@@ -301,6 +391,19 @@ public class UpgradeManager : MonoBehaviour
         }
     }
 
+    static Color GetRarityBorderColor(string rarity)
+    {
+        switch (rarity)
+        {
+            case "Common": return new Color(0.62f, 0.64f, 0.66f, 0.85f);
+            case "Uncommon": return new Color(0.22f, 0.9f, 0.34f, 0.9f);
+            case "Rare": return new Color(0.22f, 0.48f, 1f, 0.92f);
+            case "Epic": return new Color(0.68f, 0.25f, 1f, 0.95f);
+            case "Legendary": return new Color(1f, 0.55f, 0.08f, 0.98f);
+            default: return new Color(0.62f, 0.64f, 0.66f, 0.85f);
+        }
+    }
+
     void SelectOffer(UpgradeOffer offer)
     {
         if (offer.isFree)
@@ -439,6 +542,8 @@ public class UpgradeManager : MonoBehaviour
             Destroy(choiceOverlay);
 
         choiceOverlay = null;
+        currentCardRow = null;
+        rerollCost = 1;
         Time.timeScale = 1f;
 
         Action callback = currentChoiceComplete;
@@ -588,6 +693,34 @@ public class UpgradeManager : MonoBehaviour
         return rect;
     }
 
+    static Button CreateButton(string name, Transform parent, string label, UnityEngine.Events.UnityAction onClick)
+    {
+        GameObject obj = new GameObject(name, typeof(RectTransform), typeof(CanvasRenderer), typeof(Image), typeof(Button));
+        RectTransform rect = obj.GetComponent<RectTransform>();
+        rect.SetParent(parent, false);
+
+        Image image = obj.GetComponent<Image>();
+        image.color = new Color(0.18f, 0.5f, 0.74f, 1f);
+
+        Button button = obj.GetComponent<Button>();
+        ColorBlock colors = button.colors;
+        colors.normalColor = image.color;
+        colors.highlightedColor = new Color(0.25f, 0.62f, 0.88f, 1f);
+        colors.pressedColor = new Color(0.12f, 0.36f, 0.56f, 1f);
+        colors.selectedColor = colors.highlightedColor;
+        colors.disabledColor = new Color(0.16f, 0.18f, 0.22f, 0.82f);
+        colors.colorMultiplier = 1f;
+        button.colors = colors;
+        button.onClick.AddListener(onClick);
+
+        TextMeshProUGUI text = CreateText("Text", rect, label, 16f, FontStyles.Bold, TextAlignmentOptions.Center);
+        text.rectTransform.anchorMin = Vector2.zero;
+        text.rectTransform.anchorMax = Vector2.one;
+        text.rectTransform.offsetMin = Vector2.zero;
+        text.rectTransform.offsetMax = Vector2.zero;
+        return button;
+    }
+
     static TextMeshProUGUI CreateText(string name, Transform parent, string text, float fontSize, FontStyles style, TextAlignmentOptions alignment)
     {
         GameObject obj = new GameObject(name, typeof(RectTransform), typeof(CanvasRenderer), typeof(TextMeshProUGUI));