I mentioned this to a couple of people but I feel like I should post it here since it's decent advice. The best way I figured to do the 5th camera on Bunker 2 is as follows: destroy the 4th camera while leaning against the pillar as I do on my 0:44, do NOT change your angle of attack (i.e. aiming angle) at all, then - when leaving the room take a nice wide and smooth turn towards the wall on the right while ever slow slightly aiming towards the camera. You should never hope to just erratically shoot when leaving the room and pray you destroy the camera. Try to incorporate as much skill and consistency as possible. You might enjoy the level more too when you notice subtle things like these and figure out as much it.