Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock	Points
Cleaner III	Destroy 200 obstacles.	100
Cleaner II	Destroy 75 obstacles.	100
Cleaner I	Destroy 25 obstacles.	50
Clearer III	Die 24 times.	100
Clearer II	Die 12 times.	100
Clearer I	Die 6 times.	50
Hunter III	Kill 48 enemies.	100
Hunter II	Kill 24 enemies.	100
Hunter I	Kill 6 enemies.	50
Opener III	Open 5 doors with a key.	100
Opener II	Open 2 doors with a key.	100
Opener I	Open 1 door with a key.	50