Complete the following achievements to unlock Xbox Live Gamerscore points.

Achievement	How to unlock
A Cut Above ( 15 points )	Defeat 5 enemies with the Knife.
A Friend in Need ( 15 points )	Save partner 10 times when HELP is displayed.
All Dressed Up ( 30 points )	Purchase all available alternative costumes in Bonus Features.
Bad Blood ( 15 points )	Inflict a set amount of damage to your greatest enemy.
Badge of Honor ( 30 points )	Find all the BSAA emblems.
Baptism by Fire ( 15 points )	Defeat 3 Majini at once with a drum or gas tank explosion.
Be the Knife ( 60 points )	Deflect a bow gun arrow with your knife.
Bull's-eye ( 15 points )	Defeat 30 enemies with the Longbow.
Cattle Prod ( 15 points )	Defeat 30 enemies with the Stun rod.
Completed Chapter 1 - 1 ( 15 points )	Complete Chapter 1 - 1 on any difficulty setting.
Completed Chapter 1 - 2 ( 15 points )	Complete Chapter 1 - 2 on any difficulty setting.
Completed Chapter 2 - 1 ( 15 points )	Complete Chapter 2 - 1 on any difficulty setting.
Completed Chapter 2 - 2 ( 15 points )	Complete Chapter 2 - 2 on any difficulty setting.
Completed Chapter 2 - 3 ( 15 points )	Complete Chapter 2 - 3 on any difficulty setting.
Completed Chapter 3 - 1 ( 15 points )	Complete Chapter 3 - 1 on any difficulty setting.
Completed Chapter 3 - 2 ( 15 points )	Complete Chapter 3 - 2 on any difficulty setting.
Completed Chapter 3 - 3 ( 15 points )	Complete Chapter 3 - 3 on any difficulty setting.
Completed Chapter 4 - 1 ( 15 points )	Complete Chapter 4 - 1 on any difficulty setting.
Completed Chapter 4 - 2 ( 15 points )	Complete Chapter 4 - 2 on any difficulty setting.
Completed Chapter 5 - 1 ( 15 points )	Complete Chapter 5 - 1 on any difficulty setting.
Completed Chapter 5 - 2 ( 15 points )	Complete Chapter 5 - 2 on any difficulty setting.
Completed Chapter 5 - 3 ( 15 points )	Complete Chapter 5 - 3 on any difficulty setting.
Completed Chapter 6 - 1 ( 15 points )	Complete Chapter 6 - 1 on any difficulty setting.
Completed Chapter 6 - 2 ( 15 points )	Complete Chapter 6 - 2 on any difficulty setting.
Completed Chapter 6 - 3 ( 15 points )	Complete Chapter 6 - 3 on any difficulty setting.
Crowd Control ( 15 points )	Defeat 30 enemies with the Gatling gun.
Drive By ( 30 points )	Stop an armored truck by taking out the driver.
Egg Hunt ( 15 points )	Find all 4 types of eggs.
Egg on Your Face ( 15 points )	Defeat a Majini with a rotten egg.
Exploding Heads ( 15 points )	Pull off 20 headshots.
Fireworks ( 15 points )	Shoot an enemy Molotov cocktail, dynamite stick, or hand grenade.
Get Physical ( 15 points )	Defeat 20 enemies with physical attacks.
Go into the Light ( 15 points )	Defeat 2 enemies with one flash grenade.
Heart Stopper ( 15 points )	Defeat a certain enemy by stabbing it in the heart.
Lead Aspirin ( 30 points )	Defeat a Majini with a headshot while it's jumping.
Lifeguard ( 15 points )	Save partner 10 times when DYING is displayed.
Masters of Removing ( 15 points )	Work together to save someone special.
Meat Shower ( 15 points )	Defeat 3 Majini with one grenade or proximity bomb.
Recruit ( 15 points )	Complete all chapters on Amateur.
Ride the Lightning ( 15 points )	Defeat a Majini using the electric current from a transformer.
Soldier ( 15 points )	Complete all chapters on Normal.
Stockpile ( 30 points )	Obtain all available weapons.
Stop, Drop, & Roll ( 15 points )	Defeat 3 Majini at once by setting oil canisters on fire.
Take It to the Max ( 30 points )	Completely upgrade all weapons.
The Works ( 15 points )	Chain the maximum number of combos together in one go.
They Belong in a Museum ( 30 points )	Obtain all treasures in the game.
They're ACTION Figures! ( 30 points )	Collect all the figurines.
Veteran ( 30 points )	Complete all chapters on Veteran.
War Hero ( 70 points )	Complete all chapters on the most difficult setting.
Who Do You Trust? ( 30 points )	Build up a certain level of trust with your partner.