Extra Mission and Arcade Mode:
Beat the single player game and let the credits run all the way through. When they finish, you'll start another mission.
Arcade Mode will also be unlocked after completing the game.
Collect All Intel Pieces:
Cheats are unlocked by acquiring the thirty Intel Pieces strewn throughout the game.
| Unlockable | How to Unlock |
|---|---|
| "A Bad Year" Enemies explode into tires when shot | Collect 15 intel pieces |
| "Cluster Bombs" One frag grenade thrown equals five in explosion | Collect 10 intel pieces |
| "CoD Noir" Play the game in black and white | Collect 02 intel pieces |
| "Infinite Ammo" |
Collect 30 intel pieces |
| "Photo-Negative" Game colors become inverte | Collect 04 intel pieces |
| "Ragtime Warfare" The game feels like an old silent movie | Collect 08 intel pieces |
| "Slow-Mo Ability" Game plays at 40% normal speed | Collect 20 intel pieces |
| "Super Contrast" Game's contrast increases. | Collect 06 intel pieces |
Unlock Golden Weapons
The gold weapons are not enhanced, stronger, or more powerful at all, it's just a new Skin.
| Unlockable |
How to Unlock |
|---|---|
| Golden Ak-47 | Complete all Assault Rifle challenges. |
| Golden Desert Eagle | Reach Lv. 55 |
| Golden Dragonuv | Complete all Sniper challenges. |
| Golden M1014 | Complete all Shotgun challenges. |
| Golden M60 | Complete all LMG challenges. |
| Golden Mini-Uzi | Complete all SMG challenges. |
Multi-Player Weapons
Achieve the following ranks to unlock new weapon sets in multi-player.
| Unlockable |
How to Unlock |
|---|---|
| Assault Rifle (G3) | Rank 25 |
| Assault Rifle (G36C) | Rank 37 |
| Assault Rifle (M14) | Rank 46 |
| Assault Rifle (M4) | Rank 10 |
| Assault Rifle (MP44) | Rank 52 |
| LMG (M60E4) | Rank 19 |
| Pistol (Desert Eagle) | Rank 43 |
| Pistol (Golden Desert Eagle) | Rank 55 |
| Pistol (M1911) | Rank 16 |
| Shotgun (M1014) | Rank 31 |
| SMG (AK-74U) | Rank 28 |
| SMG (Mini Uzi) | Rank 13 |
| SMG (P90) | Rank 40 |
| Sniper Rifle (Barret) | Rank 49 |
| Sniper Rifle (Dragunov) | Rank 22 |
| Sniper Rifle (M40) | Rank 04 |
| Sniper Rifle (R700) | Rank 34 |
