Play as Enzo:

At the Main Menu press Up, Down, Left, Down, L1, R1, Right, Down Right. Begin a new game to play as Enzo.

Play as Dot Matrix:

At the Main Menu press Left, R1, Right, Up, Down, R2, L1, Right, Up, Down. Begin a new game or load a saved game to play as Dot Matrix.

Flight mode:

At the Main Menu press Left, Down, Right, Left, Up, R2, L1, Up, Left, Right.

Full weapons:

At the Main Menu press Up, L1, Down, Up, Left, R1, L2, Down, Left, Right.

Full glitch energy:

At the Main Menu press Right, L1, Up, Right, Down, L1, R1, Up, Down, Left.

Free shield with every glitch pick-up:

At the Main Menu press Down, R1, Left, Right, Down, L2, R2, Left, Right, Up.