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

Comeback Kid (10 points): Come back and win a game from 3 goals behind. 
Completist Freak (10 points): Get 100% in time attack mode. 
Use Your Emotion (10 points): Win at least once with each emotion. 
Hazardous Creation (10 points): Create a hazard by using a mega-ball. 
You're a Winner (15 points): Win 5 ranked matches in a row. 
Geon King (15 points): Score 5,000,000 points to be a geon king! 
I've Got The Power (15 points): Use all powerballs on your side of the map in 
a single match. 
Getting Out More (15 points): Play on Xbox LIVE at least once. 
Don't Need No Powerballs (25 points): Win without using a powerball, but you 
can still pick them up. 
Gimme Gimme World domination (25 points): Win 50 Xbox LIVE games. 
Mini-Game Master (25 points): Complete all 8 mini-games. 
Variety is The Spice of Life (25 points): Win at least once in all game modes, 
including Xbox LIVE.