There have been many people calling me a glitch abuser or a noob when I am on the stairs, using it as cover. I ask, how is it a glitch and they say I can not be shot there. They are wrong. This is more of a tip than a strategy. If you see someone on the stairs, using it as cover, and you are either the same height, or higher, all you need to do to shoot them....Is stand up. Stand up, scope and pray to god they don't shoot you first. Happy Hunting.