Complete the following achievements to unlock Xbox Live Gamerscore points.

Achievement	How to unlock
Ace of Spades ( 15 points )	Perform 5 consecutive kills without dying in an adversarial match without respawns
Bring it on! ( 10 points )	Complete a Terrorist Hunt mission at the hardest difficulty.
Cluster Bomb ( 10 points )	Kill 3 enemies at once using explosives with at least 6 players present
Come Closer ( 20 points )	Kill 100 enemies using a shotgun with at least 6 players present
Completed Convention Center ( 25 points )	Complete Convention Center in Story Mode at any difficulty.
Completed Estate ( 25 points )	Complete Estate in Story Mode at any difficulty.
Completed Nevada Desert ( 25 points )	Complete Nevada Desert in Story Mode at any difficulty.
Completed Old Vegas ( 25 points )	Complete Old Vegas in Story Mode at any difficulty.
Completed Pic des Pyrénées ( 25 points )	Complete Pic des Pyrénées in Story Mode at any difficulty.
Completed Recreational Center ( 25 points )	Complete Recreational Center in Story Mode at any difficulty.
Completed Theater ( 25 points )	Complete Theater in Story Mode at any difficulty.
Covert Ops Specialist ( 10 points )	Extract the intel item 10 times with at least 6 players present
Demo Expert ( 10 points )	Defuse 10 bombs in Attack & Defend with at least 6 players present.
Don't Mess With Me ( 45 points )	Kill 1000 enemies in multiplayer adversarial with at least 6 players present.
Double or Nothin' ( 10 points )	Win 2 ranked matches in a row.
Elite ( 50 points )	Achieve the rank of Elite
Extreme Hunter ( 50 points )	Complete all Terrorist Hunt missions on Realistic difficulty.
Eye of the Sniper ( 30 points )	Kill 500 enemies in multiplayer adversarial with at least 6 players present.
Freedom Shall Prevail ( 75 points )	Complete the Story Mode on Realistic difficulty.
Gimme a High Five! ( 10 points )	Complete 5 scenes as Bishop's teammate, Knight, in co-op Story mode at any difficulty.
Gun Shark ( 25 points )	Kill 300 enemies in multiplayer adversarial with at least 6 players present.
Haute Couture ( 10 points )	Create your own custom camouflage.
Here's for a Wicked Five! ( 20 points )	Complete 10 scenes as Bishop's teammate, Knight, in co-op Story mode at any difficulty.
I Like the Sound it Makes ( 25 points )	Kill 150 terrorists with a Shotgun.
Kamikaze ( 10 points )	Plant and detonate 10 bombs in Attack & Defend with at least 6 players present.
Machine Gunner ( 20 points )	Kill 100 enemies using a Light Machine Gun with at least 6 players present.
My Hero! ( 10 points )	Rescue both Hostages 10 times in Attack & Defend with at least 6 players present.
My Name is Sam ( 25 points )	Neutralize 5 terrorists in a row by performing headshots using a Sound Suppressor.
Natural Leader ( 15 points )	Lead your team to Victory 20 times in Team Leader with at least 6 players present.
Novice Hunter ( 5 points )	Complete your first Terrorist Hunt mission at any difficulty.
Officer ( 30 points )	Achieve the rank of Officer
One Shot, One Kill ( 30 points )	Kill 100 enemies using a Sniper Rifle with at least 6 players present.
Pointman ( 10 points )	Kill 50 enemies in multiplayer adversarial with at least 6 players present.
Private First Class ( 10 points )	Achieve the rank of Private First Class.
Rappel King ( 20 points )	Kill 25 enemies while suspended from a rope.
Royal Flush ( 30 points )	Win 100 adversarial matches with at least 6 players present.
Short Controlled Bursts ( 15 points )	Kill 100 enemies using an Assault Rifle with at least 6 players present.
Sidearm Frenzy ( 25 points )	Kill 100 enemies using a Pistol with at least 6 players present.
Spray and Pray ( 15 points )	Kill 100 enemies using a Sub-Machine Gun with at least 6 players present.
That Wasn't So Hard ( 5 points )	Complete a scene as Bishop's teammate, Knight, in co-op Story mode at any difficulty.
The Ace Always Wins ( 5 points )	Win your first ranked match online.
The House Always Wins ( 15 points )	Host and win 10 matches with at least 6 players present.
Three of a Kind ( 15 points )	Win 3 consecutive ranked matches in a row.
Triggerman ( 20 points )	Kill 150 enemies in multiplayer adversarial with at least 6 players present.
True Identity ( 20 points )	Use the Xbox Live Vision to create a character with your appearance.
Veteran Hunter ( 20 points )	Complete 5 Terrorist Hunt missions at any difficulty.
Weapon Collector ( 30 points )	Unlock every weapon in the game.