Accomplish the indicated achievement to get Gamerscore points:

Adept's Badge: Successfully complete all Advanced levels.
Apprentice's Badge: Successfully complete all Beginner levels.
Egg Basket: Find all twenty Easter Eggs.
Egg Seeker: Find an Easter Egg.
First Place: Finish in first place in a Multiplayer match.
Gem Collector: Score 75 points in a Multiplayer match.
Journeyman's Badge: Successfully complete all Intermediate levels.
Marble-fu Initiate: Successfully complete all Beginner levels under the target time.
Marble-fu Master: Successfully complete all Intermediate levels under the target time.
Marble-fu Transcendent: Successfully complete all Advanced levels under the target time.
Timely Marble: Finish any level under the target time.
Veteran Battler: Accumulate 2,000 total points in Multiplayer mode.