How do you beat Fragger Atlantis level 24

First off, take out the guy closet to you. Then line your arrow up so you can just see the very tip of the wall directly in front of you You need to have almost power. You're aiming for the small gap behind your head. Just fiddle around with the amount of power and the exact spot for the wall and arrow. It should take 2 shots if you've got your aim and power right.