Complete the following achievements to unlock Xbox Live Gamerscore points.

Achievement	How to unlock
Almost Invincible ( 20 points )	Clear the game without continuing.
Blue Bomber ( 10 points )	Defeat a Boss without getting damaged.
Conservationist ( 20 points )	Clear the game by using the least amount of Weapon Energy possible.
Destroyer ( 20 points )	Defeat your 1000th enemy.
Gamer's Day ( 20 points )	Clear the game 5 times in 1 day.
Invincible ( 30 points )	Clear the game without dying.
Jitterbug ( 20 points )	Clear the game in 60 minutes or less.
No Coffee Break ( 10 points )	Clear the game without using any Energy or Mystery Tanks.
Peacekeeper ( 20 points )	Clear the game by defeating the fewest number of enemies possible.
Trusty Sidearm ( 20 points )	Defeat the 8 Bosses with the Mega Buster.
Whomp Wily! ( 5 points )	Clear the game once.
World Warrior ( 5 points )	Defeat every type of enemy.