Accomplish the indicated achievement to get the corresponding number of Gamerscore points:

Normal Level 1 Completed (3 points): Complete arcade normal level 1.
Normal Level 20 Completed (6 points): Complete arcade normal level 20.
Normal Level 50 Completed (12 points): Complete arcade normal level 50.
Normal Level 100 Completed (24 points): Complete arcade normal level 100.
Hard Level 1 Completed (4 points): Complete arcade hard level 1.
Hard Level 20 Completed (8 points): Complete arcade hard level 20.
Hard Level 50 Completed (18 points): Complete arcade hard level 50.
Hard Level 100 Completed (32 points): Complete arcade hard level 100.
Extreme Level 1 Completed (6 points): Complete arcade extreme level 1.
Extreme Level 20 Completed (12 points): Complete arcade extreme level 20.
Extreme Level 50 Completed (25 points): Complete arcade extreme level 50.
Extreme Level 100 Completed (50 points): Complete arcade extreme level 100.