All Story mode chapters
At the title screen, press Triangle, Square, R1, Circle to unlock all Story mode chapters.

All challenges
At the title screen, press Triangle(3), Circle(3), Triangle, Square, Circle, Square(3), Up, Down, Left, Right, L1, R1 to unlock all challenges.

All characters and levels
At the title screen, press L1, R1, Square, Circle to unlock all characters and levels.

All medals and trophies
At the title screen, press R1, L1, Triangle, Square to unlock all medals and trophies.

Super Speed power-up
At the title screen, press L1(2), R1(2), L1, R1, L1, R1, Square, Circle, Triangle(2).

Pizza One
At the title screen, press Up(2), Triangle(2), Right(2), Circle(2), Down(2), L1, R1, Left(2), Square(2), L1, R1.

Pizza Two
At the title screen, press Circle(2), Square(2), Right(2), Left(2), L1(2).

Pizza Three
At the title screen, press Down(2), Right, Circle, Up, Triangle, Left, Square, L1(2).

Slammageddon
At the title screen, press Up(2), Down(2), Left, Right, Left, Right, Triangle, Square(2), L1, R1.