Complete the following achievements to award the indicated amount of Xbox Live Gamerscore points.

Achievement	How to unlock
Avant-Guardian ( 15 points )	Defeat 250 Guardians in total
Bully ( 15 points )	Squash 111 harmless enemies with your ship during one level
Grand Master ( 25 points )	Destroy at least 1000 of each enemy type
Guardian Hero ( 15 points )	Defeat 10 Guardians in a game
Guardian Killer ( 15 points )	Defeat your first Guardian
Happy Medium ( 15 points )	Score 5,000,000 points in Arcade Mode
Hunter Killer ( 15 points )	Destroy 20 Hunters in one game
Smarter Than The Average Bomb ( 25 points )	Destroy 50 enemies with one smart bomb
The Big Easy ( 15 points )	Score 1,000,000 points in Arcade Mode
The Bouncer ( 15 points )	Bounce 100 enemy bullets with an upgraded shield in one game
Well Hard ( 15 points )	Score 10,000,000 points in Arcade Mode
XXXXX ( 15 points )	Raise the score multiplier to 5x