Three kinds of bullets are firing, bomb breaks the wall

Assets/Scripts/Damagers/ExplosionDamager.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class ExplosionDamager : DamagerBase {
+	//simply causes damage and then disappears
+	void Awake() {
+		StartCoroutine (DestroyAfter (0.5f));
+	}
+
+	IEnumerator DestroyAfter(float delay) {
+		yield return new WaitForSeconds (delay);
+		Destroy (gameObject);
+	}
+}