wave behavior and fixed explosion

scenes/enemies/Enemy.cs

@@ -42,6 +42,12 @@ public partial class Enemy : CharacterBody3D,
     [Dependency]
     public TokenManager TokenManager => this.DependOn<TokenManager>();
     
+    #endregion
+
+    #region Signals
+
+    [Signal] public delegate void OnKilledEventHandler(ulong instanceId);
+
     #endregion
 
 	#region Inspector
@@ -188,12 +194,7 @@ public partial class Enemy : CharacterBody3D,
 
 	public void ProcessGameplay(double delta)
 	{
-		if (IsStunned())
-		{
-			GD.Print("Cannot attack, stunned!");
-			return;
-		}
-		// if (_hitAbilityHandle == null) return;
+		if (IsStunned()) return;
 		
 		var bodies = DamageBox.GetOverlappingBodies();
 		foreach (var body in bodies)
@@ -253,6 +254,8 @@ public partial class Enemy : CharacterBody3D,
 		{
 			killable.Kill();
 		}
+		
+		EmitSignalOnKilled(GetInstanceId());
 		CallDeferred(Node.MethodName.QueueFree);
 	}