(adsbygoogle = window.adsbygoogle || []).push({}); its pretty easy, there's 3 steps for doing this.

1. "Kino Der Toten" first is unlocked from the start

2. "Five" beat the campaign on anything but easy

3. "Dead Ops Arcade" in the main menu (where it shows the tv's) look down at your hands and rapidly press r2 and l2 , till his hands become free. walk around to behind the chair to the computer and if it asks for a password use "RUSALKA." then type "CD", hit enter, then "DOA" and hit enter.

haha i used the 3arc unlock the week the game came out and your only posting this stuff now bahaha