Astro Boy: The Video Game Level select
Pause the game and press Up, L, Right, L, Down, L to unlock all levels.
Invincibility
Pause the game and press Up, Down(2), Up, L, R.
Max stats
Pause the game and press Left(2), R, Down(2), L.
Infinite Dashes
Pause the game and press R(2), L, R, Left, Up.
Infinite Supers
Pause the game and press Left, L, Right, L, Up, Down.
Disable Supers
Pause the game and press L(2), R(2), L, Left.
Alternate costume
Pause the game and press R, Up, L, Up, Down, R.