Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock	Points
Level 2	Complete level 2.	50
Level 4	Complete level 4.	50
Level 6	Complete level 6.	50
Level 8	Complete level 8.	50
Level 10	Complete level 10.	100
Level 12	Complete level 12.	100
Level 15	Complete level 15.	100
Level 18	Complete level 18.	100
Level 21	Complete level 21.	100
Level 24	Complete level 24.	100
Level 27	Complete level 27.	100
Level 30	Complete level 30.	100
Spectral Sprint I	Complete level 3 with ghost mode turned on.	200
Spectral Sprint II	Complete level 11 with ghost mode turned on.	200
Spectral Sprint III	Complete level 17 with ghost mode turned on.	200
Spectral Sprint IV	Complete level 23 with ghost mode turned on.	200
Spectral Sprint V	Complete level 28 with ghost mode turned on.	200