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

Standard Gold (10 points): Achieve first place in a Standard Race Tournament.
Cone Trial Gold (10 points): Achieve first place in a Cone Trial Tournament.
Battle Royal Gold (10 points): Achieve first place in a Battle Royal Tournament.
Hard Core Gold (10 points): Achieve first place in a Hard Core Racing Tournament.
Multiplayer King (20 points): Win a multiplayer match.
Mascot Jr. (30 points): Win a race with each of the BK characters.
Career King (30 points): Complete all of the tournaments.
Pro-Gamer (25 points): Complete at least 25 Xbox Live matches.
Big Wheelie (15 points): Wheelie for more than 2 seconds.
Big Stoppie (20 points): Stoppie for more than 0.5 seconds.
Big Air (10 points): Jump for more than 50 meters.
Time Trial Gold (10 points): Achieve a lap time of less than 1:30 on all tracks in Time Trial.