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

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