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