Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock	Points
Ice Age	Finish Level 5.	80
Infection	Finish Level 7.	80
Meteor	Finish Level 2.	80
Nirvana	Finish Level 11.	100
Nuclear Storm	Finish Level 9.	80
Outer Space	Finish Level 6.	80
Pollution	Finish Level 10.	80
String Theory	Finish Level 1.	80
The End	Finish Level 12.	100
Vulcano	Finish Level 4.	80
War	Finish Level 8.	80
Waves	Finish Level 3.	80