First Steps - Beat a Supersonic Ghost.
Early Days! - Win a point in a multi-player battle.
Speed King - Earn at least Bronze in all the Speed Challenges.
Weapon Master - Earn at least Bronze in all the Weapon Challenges.
Skill Chief - Earn at least Bronze in all the Skill Challenges.
I am the best! - Win a multi-player battle.
No one can beat me! - Win 10 multi-player battles.
Elite Champion - Earn at least Bronze in all the Elite Challenges.
Silver Arrow - Earn at least Silver on all Challenges.
Supreme Being - Earn Gold on all Challenges.
I have no peers! - Download and beat a rivals time.
World Tour - Win a multi-player battle on every course.
Flawless Victory - Win a multi-player battle by winning every point.
Weapons Officer - Use every weapon in the game.
Grease Monkey - Unlock all the car upgrades.
Platinum Trophy - Earn all Bronze, Silver, and Gold trophies.