Man that was easy 1/5 just hold your left click and go close to the end and when you hold left click you can go through walls....
Just go about 2 inches away from the end and you make it easily by going thru walls
3.5/5, you have good collision detection but you need to program it to aim for the player cause i stood there and nothing hit me..... Also try making the box bigger or smaller for an easy, medium, and hard level