Powerup time limited

Assets/Scripts/Enemy.cs

@@ -4,7 +4,7 @@
 
 public class Enemy : MonoBehaviour
 {
-    public float speed = 3f;
+    public float speed = 2f;
     private Rigidbody enemyRb;
     private GameObject player;
 

Assets/Scripts/PlayerController.cs

@@ -6,6 +6,7 @@ public class PlayerController : MonoBehaviour
 {
     public float speed = 5f;
     public bool hasPowerup = false;
+    private float powerUpStrength = 15f;
     private Rigidbody playerRb;
     private GameObject focalPoint;
 
@@ -30,13 +31,24 @@ private void OnTriggerEnter(Collider other)
         {
             hasPowerup = true;
             Destroy(other.gameObject);
+            StartCoroutine(PowerupCountdownRoutine());
         }
     }
 
+    protected IEnumerator PowerupCountdownRoutine()
+    {
+        yield return new WaitForSeconds(7);
+        hasPowerup = false;
+    }
+
     private void OnCollisionEnter(Collision collision)
     {
         if(collision.gameObject.CompareTag("Enemy") && hasPowerup)
         {
+            Rigidbody enemyRigidbody = collision.gameObject.GetComponent<Rigidbody>();
+            Vector3 awayFromPlayer = collision.gameObject.transform.position - transform.position;
+
+            enemyRigidbody.AddForce(awayFromPlayer * powerUpStrength, ForceMode.Impulse);
             Debug.Log("Collided with: " + collision.gameObject.name + " with powerup set to " + hasPowerup.ToString()); 
         }
     }