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

300 Club (25 points): Awarded for getting 300 points during a game. 
Filthy Rich (15 points): Earned $100,000 in cash. 
First to First (10 points): Awarded for achieving 1st place in a Tournament. 
Star Power (15 points): Awarded for collecting every star on a course. 
The Locksmith (10 points): Unlocked every course in the standard game. 
The Ball Hog (10 points): Bowled with every ball in the game. 
The Journeyman (15 points): 100 multiplayer games completed. 
The Power Saver (25 points): Completed a game without using any Rocket Boosters. 
The High Roller (25 points): Earn at least 50 in cash in an Xbox LIVE game. 
The Streaker (10 points): Get First Place 5 times in a row in Xbox LIVE games. 
The Super Streaker (15 points): Get First Place 10 times in a row in Xbox LIVE games. 
The Invincible Streaker (25 points): Get First Place 25 times in a row in Xbox LIVE games.