Complete the following achievements to unlock Xbox Live Gamerscore points.

Achievement	How to unlock
Awardist (60 points)	Earn 100 awards.
Battle Sight Zero (30 points)	Kill 250 enemies with headshots.
Clean Sweep (60 points)	Kill the entire opposing team without any members of your team taking any damage.
Expert Marksman (25 points)	Get a kill with every weapon.
First Things First (30 points)	Personally kill the entire Terrorist team before the bomb is planted in Online Demolition Mode.
God of War (70 points)	Kill 10,000 Enemies.
King of the Kill (40 points)	Play 5,000 matches of Arms Race or Demolition mode.
Magic Bullet (10 points)	Kill an enemy with the last bullet in your magazine (excluding sniper rifles and Zeus x27).
Points in Your Favor (15 points)	Inflict 2,500 total points of damage to enemies.
Rampage! (20 points)	Win an Arms Race match without dying.
Repeat Offender (20 points)	Dominate an enemy.
War Bonds (20 points)	Earn $50,000 total cash.