Accomplish the indicated task 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.