Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock	Points
Be careful with the hostages	Accidentally kill a gray character.	90
Champion	Complete 25 levels.	90
Don't give up	Die for the first time.	10
Expert	Complete 20 levels.	90
Great shot	Kill a purple or yellow enemy.	90
It was him or you	Kill a black enemy.	90
Keep it up	Complete 10 levels.	90
Rookie	Complete 5 levels.	90
Special	Complete 3 special levels.	90
Super special	Complete 6 special levels.	90
Well done	Complete a level with 3 stars.	90
You can do it	Complete 15 levels.	90