Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock
Be The Boss (80 points)	Earn a first place finish in each Desert level in Smack Attack, Gate Relay and Flag Rally modes.
Collector (80 points)	Win all levels in Flag Rally mode.
Dodgy (40 points)	Complete 10 sideways dodges in one match by using the right stick or LB/RB.
Drifter (40 points)	Earn double smacks by damaging an opponent in Smack Attack while powersliding with the brake.
Finale (80 points)	Win 12 different matches with a single character.
Flipping Out (40 points)	Earn 10 boosts in one match by completing forward flips with the right stick.
Hoarder (40 points)	Win Flag Rally with at least two captures of 3 or more flags at a time.
New Talent (40 points)	Win any level.
Nitro (40 points)	Win Gate Relay having used turbo boost 20 times.
No Favorites (40 points)	Win Smack Attack while getting points from at least 10 different weapons.
Purist (40 points)	Win Smack Attack while using only your character's favorite weapon collected from "!" powerups.
Smacker (80 points)	Win all levels in Smack Attack mode.
Smart Coyote (40 points)	In Death Valley, drop the 100 ton weight on opponent by shooting the target with your Basic Attack.
Speedster (80 points)	Win all levels in Gate Relay mode.
Steamroller (40 points)	Flatten 3 different opponents in one Gate Relay race by dodging into them with the RS or LB/RB.
Toon Star (200 points)	Win all levels in all modes.