Warhead semi-glitch
I found a roof thing to stand on in Warhead but you need the help of super jump or fly. That is why it is a super glitch. I also got away with it because there is top of a ladder in middle of it for some reason and no hole to go down or up. Anyways, it is the ceiling/roof to the locker room. e.g. Explosive barrel, lockers, door. You have to stand outside the door and jump/fly onto the piping and then jump onto roof. Or just jump onto roof. Also you can see into another area where there are people and shoot there. But there is water between it. No one can see you except your nametag.