Complete the following achievements to unlock Xbox Live Gamerscore points.

Achievement	How to unlock
Achilles' Heel (5 points)	Defeat Achilles. (TROJAN)
Berserker (5 points)	Destroy 500 enemies. (SIDE ARMS)
Dark Destroyer (5 points)	Destroy the supercomputer known as "Dark." (LEGENDARY WINGS)
Pest Control (5 points)	Defeat the final boss, Bahamut Centipede. (SIDE ARMS)
Stage 3 Clear (5 points)	Clear Stage Three. (LEGENDARY WINGS)
Stage 3 Clear (5 points)	Clear Stage Three. (TROJAN)