with the button that say open
On XBOX it is X on PS it is Rectangle
you open the door upstairs and go to the power room it should be on the wall
wen u get 2 tha 3 rd level and u open a new door
On ps3 it's square so the pink button. On Xbox it's the blue X.
You must use all of the hovercrafts and then launch the rocket from the random box room
On black ops, there is. When you spawn in the lobby, run between the stairs and turn left. There is two large doors at the end of the corridor. Open this large door and run through the next room towards the right. There is a small door on which you can open and get outside.
its in the elevator, you have to open a door (750), clear the debris in front of it (1000) then you can use it by activating the switch for 250 points for a trip.
Use your hands. addduhhh.
The door's color pattern is the answer. The darker squares are black.
you have to go online and download the new version of black ops on to your xbox/playstation console
because there is a mystery box that you have to open
It's the ninja door you have to have the black belt then beat sensei and you can go to that wooden door