Cheat option
Successfully complete Campaign mode. Pause game play in Campaign mode, then select "Options" to access the "Cheat" menu. To unlock the cheat options, find the indicated number of hidden Intel pieces. Note: Cheats must be reactivated after losing a life.
A Bad Year: 15 Intel.
Cluster Bombs: 10 Intel.
CoD Noir: 2 Intel.
Infinite Ammo: 30 Intel.
Paintball: 8 Intel.
Photo-Negative: 4 Intel.
Slow-Mo Ability: 20 Intel.
Super Contrast: 6 Intel.
Golden weapons
Complete the indicated task to unlock the corresponding golden weapon version.
Golden AK-47: Complete all assault rifle challenges.
Golden Desert Eagle: Reach level 55 "Commander" rank.
Golden Dragunov: Complete all sniper challenges.
Golden M1014: Complete all shotgun challenges.
Golden M60E4: Complete all LMG challenges.
Golden Mini-Uzi: Complete all SMG challenges.