Unlock Stunt Mode- Get all 10 coins using season mode to get Stunt Mode.
Best Racers- The Max, Wild Ride and Spirit are considered the best racers.
Get Granny- Use the Professional Difficulty and finish 1st place.
High Speed Racing- During play press L1 + Right, R1 + Down, Square, L1 + Triangle, R1 + Down, L1 + Left, Select.
Get TV Camera- During play press Circle, L1 + Triangle, L1 + X, Triangle, R1 + Up.
Get Capt. Ballad- Finish the Pro season using all but 2 racers.
Get Tracks (Planet X & Ramp Park)- Use Circuit Mode and Professional Difficulty and finish in 1st place.