Complete the following achievements to unlock Xbox Live Gamerscore points.

Achievement	How to unlock
Ambient Master ( 15 points )	Complete three levels in each Ambient Forever zone.
Black Hole Sun ( 20 points )	Collapse the system in level F2-3 by feeding the Attractor.
Disciple of the Osmos ( 10 points )	Complete all tutorial zones.
Fittest ( 20 points )	Complete all Sentient zones.
Graduate of the Osmos ( 30 points )	Complete the game.
Gravitronics ( 20 points )	Complete all Force zones.
Master of the Deep ( 15 points )	Complete five levels in any Forever zone.
Master of the Force ( 15 points )	Complete three levels in each Force Forever zone.
Purity ( 20 points )	Complete all Ambient zones.
Viral Master ( 15 points )	Complete three levels in each Sentient Forever zone.
Voyager ( 20 points )	Unlock all zones.