Intel is 3arc Intel
Go to the terminal in the main screen and type in doa.
Tap the triggers on consoles and go to the terminal and type 3arc unlock...or bear campaign
type in 3ARCUNLOCK in the computer terminal and for dead ops arcade type in doa instead.
You go to the terminal and punch in DOA you'll unlock a level called dead ops arcade (the last level)
its one of the first things u unlock
For dead ops arcade goto the terminal and put doa as the code to unlock it. For five goto the terminal again and put 3ARC UNLOCK and it will give you the map five. The rest you must buy all four map packs for 14.99
In Black Ops multiplayer you unlock the AK-47 at level 38.
If you are talking about the third map, type in 3ARC UNLOCK in the terminal at the main menu. and if you don't know how to do that just look it up on you tube
Kino Der Toten- You get this map straight away when you play black ops. Five- You unlock Five by beating the single-player campaign on any difficulty. Dead Ops Arcade- once you complete single-player campaign type DOA into the main menu terminal.
3arc unlock
type in 'doa' on that computer or '3arc unlock'
at the main menu in black ops look aroung with the right thumbdtick then repeatedly press the LT and RT until you break from the torture chair. you will get an achievemnt. make your way to the terminal and type in DOA in the computer to unlock the dead op arcade. or to unlock all maps type in 3 ARC UNLOCK