Call of Duty 4: Modern Warfare Cheats
Completion bonusesSuccessfully complete the game on any difficulty setting to unlock the cheat menu and Arcade mode. The cheat menu can be found at the options menu while playing the game.
Cheat optionsCollect the indicated number of Intel Pieces (enemy laptop computers) hidden throughout the game to unlock the corresponding cheat option:
COD Noir: 2 Intel Pieces. [...]