Complete the following achievements to unlock Xbox Live Gamerscore points.

Achievement	How to unlock
Barrel Roll (20 points)	Do a full Barrel Roll and then land safely on the track.
Big Air (20 points)	Leave the track and fly for 10 seconds, then land safely on the track.
Bling (20 points)	Finish 50 levels (Challenge or Race Mode) in the Gold Time or better.
Bonustar (5 points)	Collect all the stars and the GS token on a single run.
Checkered Flag (5 points)	Finish in first place in 10 Single Player Single Races.
DeathRay (25 points)	In a Deathmatch, use a DeathRay on a player who is using a Flaming Shield.
Decathlon (10 points)	Win all the goals in 10 different Challenge Levels.
Galileo (15 points)	Collect all the stars in 50 levels (Challenge or Race mode).
GS King (25 points)	Find and collect the GS token in every Challenge level in the game.
Indy 50 (20 points)	Win 50 Multiplayer races.
Mister Trigger (10 points)	Score 200 frags in Deathmatch play.
Temple Master (25 points)	Complete the Temple of Doom Challenge Level without a single death/restart.