Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock	Points
Level 12	Complete level 12.	100
Level 15	Complete level 15.	100
Level 18	Complete level 18.	100
Level 1	Complete level 1.	50
Level 21	Complete level 21.	100
Level 24	Complete level 24.	100
Level 27	Complete level 27.	100
Level 30	Complete level 30.	100
Level 3	Complete level 3.	50
Level 5	Complete level 5.	50
Level 7	Complete level 7.	50
Level 9	Complete level 9.	100