Complete the following achievements to unlock Xbox Live Gamerscore points.

Ruthless (10 points): Destroy 10 Saucers without letting any escape Asteroids - Normal difficulty.
Precision (10 points): Complete wave 1 with 28 shots or less Asteroids - Normal difficulty.
Maniac (15 points): Earn a bonus life Asteroids - Throttle Monkey mode.
Superstar (15 points): Have 4 lives in hand Asteroids - Normal difficulty.
Rockstorm (20 points): Have 24 Asteroids on screen Asteroids - Normal difficulty.
Clockstopper (30 points): End a game on exactly 99990 points Asteroids - Normal difficulty.
Fugitive (10 points): Survive for 3 minutes on your first life Asteroids DeLuxe - Normal difficulty.
Mayhem (10 points): Have a Saucer and 6 Killer Satellite sections on screen Asteroids DeLuxe - Normal difficulty.
Lunatic (15 points): Earn a bonus life Asteroids DeLuxe - Throttle Monkey mode.
Hero (15 points): Have 4 lives in hand Asteroids DeLuxe - Normal difficulty.
Platinum (20 points): Score 250,000 points Asteroids DeLuxe - Normal difficulty.
Pinpoint (30 points): Complete wave 3 with 42 shots or less Asteroids DeLuxe - Normal difficulty.