50 Balls: Pause the game then hold L and press X, B, Left, Y, Right, Right
All characters fly: Pause the game then hold L and press X, Y, A, Left, Left, Right, Right
Get All Characters: Pause the game then hold L and press X, B, Left, Y, Right, Right
Infinite Fruits: Pause the game then hold R and press B, X, Left, Left, Y
Never Get Hit: Pause the game then hold down L and press X, B, B, Left, Left, Y, B
Unlock Roscoe:
Get 20 Hex Bux in all 8 levels.
Unlock Synder:
Complete the time challenge for each level
Unlock Tek-9:
Beat the game with any character
Unlock Tremmel King:
Get 3 shortcut medals in all of the levels
Unlock Gex:
Beat the game with all three characters, complete all time, stunt, and cash trials, do 10 attacks at each level, and get all the medals to unlock Gex, the gecko
Unlock Hex:
Beat the game with each of the 3 main characters (Sid, Zero-G, and Chops) to unlock Hex