Unlock Xbox Live Gamerscore points, by completing the following Achievements.

Achievement	How to unlock
Area 1 Clear (10 points)	Cleared Area 1!
Area 2 Clear (10 points)	Cleared Area 2!
Area 3 Clear (10 points)	Cleared Area 3!
Area 4 Clear (10 points)	Cleared Area 4!
Area 5 Clear (10 points)	Cleared Area 5!
Area 6 Clear (10 points)	Cleared Area 6!
Area 7 Clear (10 points)	Cleared Area 7!
Area 8 Clear (10 points)	Cleared Area 8!
Area 9 Clear (10 points)	Cleared Area 9!
Grand Champion (10 points)	Cleared Championship!
Race Against Time (30 points)	Completed all Time Attacks!
True Completionist (70 points)	Cleared all areas on hard difficulty!