there ain't any i have the action replay so don't buy one
There are no zombies cheats.
no their isnt
3arc unlock
You can't... But Online and Nazis zombies is co-op. :D
Cheats only work In Nazi Zombies, and Co-op. If you tried cheats in one of these and it said that, then i don't know why.
There is no co-op mode like Modern Warfare 2's Spec-Ops mode In Black ops, the Zombies mode is considered as the co-op mode.
zombies is a story line from callof duty world at war. then to black op. also look for the story line on google.com/
you cant upgrade it twice
You don't. The only thing close to co-op campaign, is Nazi Zombies.
There are no real cheats, just glitches; and there is at least one glitch on every map. Even on zombies.
there is co-op online multiplayer, zombies, bots(online)
it depend sif your playing black ops zombies or world at war zombies black op zombies has stamin up double tap and PhD flopper regular world at war zombies has speed cola jugger nog and quick revive