Complete the following achievements to unlock Xbox Live Gamerscore points.

Achievement	How to unlock
A Fistful of Dollars (20 points)	Earn 15,000 dollars.
A Taste of Blood (30 points)	Kill 150 enemies.
BFFs (20 points)	Play Co-Op mode for 5 minutes.
Bombing Run (10 points)	Destroy 5 ground enemies with your aircraft.
Don't get close (10 points)	Melee kill 10 enemies.
Fully Upgraded (30 points)	Upgrade all weapons.
Hardcore (40 points)	Complete the game on hardcode difficulty.
I hope you have insurance (20 points)	Destroy 50 vehicles.
Invincible (20 points)	Complete a vehicle minigame without getting hit.
It's done (30 points)	Complete the game on any difficulty.
Old Friends (10 points)	Meet Delgado for the first time.
Pieces of You (30 points)	Kill 6 enemies with a single grenade.
Some Like it Hot (10 points)	Kill 20 enemies with grenades.
Starting a collection (10 points)	Find 5 collectables.
The Collector (30 points)	Find all the collectables.
The Specialist (20 points)	Use all special ammo and weapons.
Unpopular (30 points)	Kill 3,000 enemies in total.
Upgrade (10 points)	Upgrade a weapon.
Warm up (10 points)	Complete Mission 01.
Welcome to the Jungle (10 points)	Get to South America.