you can do this glitch with 2-4 players.when you start get enough point to buy downstairs(the person who is doing the glitches doesnt open downstairs)then the person who is doing the glitch stand in between the two walls with the thompson on it.he then downs himself and dies.when he respawns jump into the bit sticking out underneath the box and it should creat a barrier HE/YOU they downed themself.you can buy randoms from where you are.The rest of your team stand the room behind you where there is only one window.make sure they dont come out of there or some zombies will come for them,and also make sure they dont get ramdom becuse normally they will get teddie. IF YOU NEED HELF my xbox live gametag is XBrUtAlSnIpEzX. HAPPY GLITCHING