Few bug fixes

Fixed `Time Left!` display. Added obstacle course ends for all 4 maps. Sets obstacle course end goals to only work on the correct gamemode. Set correct time limits for keep away in every map.

Assets/Scripts/Game/ObstacleCourse.cs

@@ -0,0 +1,19 @@
+using UnityEngine; using Game; using Music; using Player;
+
+namespace Game
+{
+
+public class ObstacleCourse : MonoBehaviour
+{
+    public static GameObject playerWon;
+
+    void OnTriggerEnter2D(Collider2D collision)
+    {
+        if (collision.gameObject.CompareTag("Player"))
+        {
+            playerWon = collision.gameObject;
+            GameManager.Instance.GameOver();
+        }
+    }
+}
+}