Input the codes on the title menu.

Unlock All Challenges ... I, I, I, L, L, L, I, J, L, J, J, J, W, S, A, D, U, O
Unlock Pizza One ... W, W, I, I, D, D, L, L, S, S, U, O, A, A, J, J, U, O,
Unlock Pizza Two ... L, L, J, J, O, O, A, A, U, U
Unlock Pizza Three ... S, S, D, L, W, I, A, J, U, U
Activate Speed Modifier ... U, U, O, O, U, O, U, O, J, L, I, I
Activate Slammageddon ... W, W, S, S, A, D, A, D, I, J, J, U, O
Unlock All Characters and Levels U, O, L, J, O, U, J, L, J, J, J, J, I, I, L, L
Unlock All Medals and Trophies ... O, U, I, J, S, S, D, A, U, O, J, I, W, S, W, S
Unlock All Story Mode Chapters ... I, S, J, W, O, A, L, D, S, D, A, W, J, I, L, L