Killed 10 enemies while crouching in any multiplayer mode.

Finished a multiplayer match with 100% accuracy (Minimum of 10 kills).

Performed 300 reloads in any multiplayer mode.

Got a triple kill with an explosive during a single Ranked Match - Team Deathmatch.

Accumulated 30 kills with a silencer over Xbox LIVE.

Got 20 kills with a shotgun in a single Ranked Match - Capture The Flag.

Disarmed 15 bombs in Demolition mode.

Achieved a 25% vital zone hit ratio in a multiplayer match.

Achieved 25 kills from a distance greater than 100 feet without a scope in any multiplayer mode.

Achieved 15 kills with a sniper rifle in a single Ranked Match - Deathmatch.

Achieved 5 headshots in a row without dying using a sniper rifle in a multiplayer match.

Killed the bomb carrier with an assault rifle 5 times in a single Ranked Match - Demolition.

Achieved 5 kills in a row without dying with an SMG in a single Ranked Match - Elimination.

Killed 10 opponents with a machine gun during a single Ranked Match - Team Elimination.

Achieved 50 kills using pistols in any multiplayer mode.

Shot off all 4 limbs on any combination of players over the course of a multiplayer match.

Killed 50 opponents in Ranked Matches with a knife attack from behind.

Accumulated 250 dismemberments in any multiplayer mode.

Accumulated 100 headshots over Xbox LIVE in any mode.

Killed 30 enemy flag carriers in Capture The Flag.

Killed 75 enemies by shooting them in the groin in any multiplayer mode.

Hosted and completed 100 multiplayer matches.

Killed 4 members of the opposing team while carrying their flag.

Had a 1 to 5 or worse Kill to Death ratio in a multiplayer match.

Had a 5 to 1 or better Kill to Death ratio in a multiplayer match (minimum of 20 kills).

Accumulated 50 suicides over Xbox LIVE in any mode.

Was the most skillful player in a Ranked Match.

Completed the Al Qa’im level on the hardest difficulty setting.

Completed the Mogaung levels on the hardest difficulty setting.

Completed the Eshkashem levels on the hardest difficulty setting.

Completed the Llebo levels on the hardest difficulty setting.

Completed the Donetsk levels on the hardest difficulty setting.

Completed the game without dying on Normal or Hard difficulty.

Completed the game on any difficulty setting.

Completed the game on the hardest difficulty setting.

Killed 1000 enemies throughout the campaign.

Performed 500 dismemberments throughout the campaign.

Killed 5 enemies in 5 seconds in any game mode.

Performed a dismemberment at every point on the enemies' bodies.

Accumulated 100 kills with the knife over Xbox LIVE in any mode.