Shooting Through Walls - Junk Flea Glitch
This requires chams.
1) At the bravo spawning place, go up the stairs.
2) You should see a window, but not see though.
3) Stand as close to it as possible.
4) Shoot though it as if there isn't a window there.
5) Kill (but its hard to tell if they are behind another object behind the window or not. Shoot a few times, see if they react to the bullets.)