Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock
Blitz bronze (30 points)	Finished blitz 1 time in one game.
Blitz gold (125 points)	Finished blitz 5 times in one game.
Blitz silver (45 points)	Finished blitz 3 times in one.
Dodge bronze (30 points)	Survival 25 seconds in the dodge challenge.
Dodge gold (125 points)	Survival 45 seconds in the dodge challenge.
Dodge silver (45 points)	Survival 35 seconds in the dodge challenge.
Guardian (200 points)	Killed a Guardian.
Reaper bronze (30 points)	Eliminate 10 robots in one game.
Reaper gold (125 points)	Eliminate 30 robots in one game.
Reaper silver (45 points)	Eliminate 20 robots in one game.
Unscathed bronze (30 points)	Get unscathed 1 time in one game.
Unscathed gold (125 points)	Get unscathed 5 times in one game.
Unscathed silver (45 points)	Get unscathed 3 times in one game.