added indicators to quest on ch02, added alternative quest branch, added scene to build, changed scene loading patern

Assets/Scripts/Debug/DebugDisableEnemies.cs

@@ -2,6 +2,8 @@ using System.Collections.Generic;
 using UnityEditor;
 using UnityEngine;
 
+#if UNITY_EDITOR
+
 namespace Beyond {
 public class DebugDisableEnemies
 {
@@ -90,3 +92,5 @@ public class DebugDisableEnemies
     }
 }
 }
+
+#endif