Complete the following achievements to unlock Xbox Live Gamerscore points.

Achievement	How to unlock
Cosmic Scourge ( 25 points )	Awarded for your 1,000th frag in ranked Death Match!
Crystal Power ( 10 points )	Collect 500 Crystals in Arcade Adventure Mode.
Data Preservationist ( 20 points )	In Arcade Adventure Mode, collect 7 or more Data-Cores dropped by special enemies.
Destroyer of All ( 15 points )	In Arcade Adventure Mode, get the 100% Destructible clear bonus on 4 levels.
Galactic Pilot ( 5 points )	Beat Levels 1 and 2 in Arcade Adventure Mode.
Galaxy Crusher ( 25 points )	Crush Arcade Adventure mode with 100% Crystals bonus on all levels including all Secret levels!
Marauder Destroyer ( 15 points )	In Split Screen Score Attack Mode, cooperatively destroy 100 Marauders total.
Maximum Overdrive ( 10 points )	Achieve Maximum Overdrive in Arcade Adventure or Single Player Score Attack modes.
Raider ( 15 points )	In Arcade Adventure Mode, destroy all Factories found in the Toxic Sector.
Score the Core ( 25 points )	Collect all crystals in Single Player Score Attack to reach the secret ending level!
Secret Explorer ( 15 points )	Beat 3 secret levels in Arcade Adventure Mode.
Sonic Speed ( 20 points )	Beat Arcade Adventure, starting from Training, in 1 hour and 20 minutes or less.