What are all the glitches in call of duty black ops zombies?

Answer 1

to get the ray gun every time:shoot 8 times and then knife

to get the thunder gun every time:jump,then shoot, go prone, shoot, and then stand up

to get infinite ammo[only works once for the next five rounds]:shoot, then reload , and right after doudle tap Y

to get three guns: play single Zombies,by revive,then kill until power is turned on,go to bowie knife,wait for crawler buy knife get crawler hits you second time,then hold in knife button , and go buy a weapon, scoll thoiugh weapons and you have a third weapon