Instructions
Load "Call of Duty: Black Ops" and begin playing a game of "Nazi Zombies," either solo or in a multiplayer game. Having teammates makes it easier to use the teleporters.
Survive the first few rounds and save up points. Make your way to the backstage area.
Press the action button while standing near the power switch. Activate it, and you will unlock several areas of the map.
Stand on the teleporter pad on the back stage area and press the action key. You will hear a click when it becomes active.
Run back to the lobby, stand on the teleport pad and press the action button, which will link the pad to the previous teleport pad. You can now use the linked teleport pads to enter the theater room. If you have teammates, you can split up to make the activation and linking of the teleport pads easier.