Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock
2 Star Par time (50 points)	Get a two star time from all levels in Time Attack.
Beat That (50 points)	Kill everyone in a level with melee.
Blast Blast Blast... Blast (50 points)	Do four Dash-Blasts in a single level.
Dasher (50 points)	Kill four enemies with a single Dash.
Dasher-Blaster (50 points)	Kill five enemies with a single Dash-Blast.
Faster than a bullet (100 points)	Get a three star time from all levels in Time Attack.
Friendly Fire (50 points)	50 enemies dead by friendly fire.
Hardcore (100 points)	Complete all levels on Hardcore difficulty.
Mr. Freeze, Time (50 points)	Activate Time Freeze.
Murderous (200 points)	Complete all levels on Murderous difficulty.
Psyche (50 points)	Kill six enemies with a single Psy-Blast.
Psychic (50 points)	Use Psy-Blast.
Shotgunner (50 points)	Kill three enemies with a single shotgun blast.
Six-Pack (50 points)	Chain six Dashes.
Whole Worm (50 points)	Kill four enemies with a single Wormhole.