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Achievements
Do the following things to obtain the corresponding Gamerscore points:
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| Mercenary (15 points) | Finish the game on Suicide Mission difficulty. |
| Sleuth (20 points) | Find all of the Secret Areas in the game. |
| Veteran (7 points) | Finish the game on Black Ops difficulty. |
| Freedom (25 points) | Free 25 POWs. |
| Combined Assault (40 points) | Finish the game with at least one other player. |
| Brasso (10 points) | Achieve the 12X score multiplier. |
| Hero (10 points) | Achieve the 24X score multiplier. |
| Madman (30 points) | Attain a 24X score multiplier on every level. |
| Armored Attack (6 points) | Get in the tank with two other players. |
| Humanitarian (10 points) | Rescue all of the POWs in the game. |
| One Man Army (7 points) | Kill 200 enemies. |
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| Reckless Driver (20 points) | Kill 40 enemies while in a vehicle. |
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Full health
Notice: This code may longer work after the latest game update. Pause the game on Xbox Live when you are low on health, then rotate the D-pad in a full circle at least three times. Select the 'Achievements' option at the menu. Push B to exit that screen. Select the 'Resume Game' option. You will still remain at the same screen. Select 'Resume Game' again. The game will begin with your character at full health. Alternately, pause the game on Xbox Live when you are low on health, then push Guide to enter the Dashboard menu. Push Guide again to exit the menu and resume the game with full health.
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Mission select
Successfully complete the game to unlock all missions.
Notice: Using this option will prevent the 'Humanitarian', 'Madman', 'Mercenary', 'Sleuth', 'Veteran', and 'Combined Assault' achievements from becoming unlocked.