Get Untracked Course:
Get all medals on all race courses
Get Pipedream Course:
Get a medal on all Showoff courses
Get Different Outfits:
Finish all chapters in the trick book. Finish world circuit with a master rank
Get Uberboards:
Finish all tricks for a character
Character List:
The original chars are:
1. Eddie
2. Elise
3. Moby
4. Mac
Unlockables are:
1. JP
2. Psymon
3. Brodi
4. Luther
5. Seeiah
6. Zoe
7. Luther
8. Kaori
9. Marisol
10. Marty