Level Select
When at the Title screen press Y, Down, Up, R, L, L, R.
Weapon Select
While at the Title screen, press Y, Down, Up, L, R, L, R. While playing, hold A+C while pressing Y to change your weapon.
Hidden Game 1
When at the Title screen press Y, Down, Up, L, R, Left.
Hidden Game 2
When at the Title screen press Y, Down, Up, L, R, Right.
