Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock	Points
Level 2	Complete level 2 in classic mode.	50
Level 5	Complete level 5 in classic mode.	50
Level 8	Complete level 8 in classic mode.	50
Level 12	Complete level 12 in classic mode.	50
Level 16	Complete level 16 in classic mode.	50
Level 20	Complete level 20 in classic mode.	50
Level 24	Complete level 24 in classic mode.	100
Level 28	Complete level 28 in classic mode.	100
Level 32	Complete level 32 in classic mode.	100
Level 36	Complete level 36 in classic mode.	100
Level 40	Complete level 40 in classic mode.	100
Level 45	Complete level 45 in classic mode.	100
Level 50	Complete level 50 in classic mode.	100