Pause the game and press Up, Down, Up, Down, Left, Right, Left, Right, Z, Nunchuck Down, Z, Nunchuck Down.
Secret Baby Rattle weapon
Successfully complete the game on the Easy difficulty setting. Then, pause the game and press Left(2), Right(2), Z, Nunchuck Down(2), Z, Up, Down.
Secret Telephone weapon
Successfully complete the game on the Normal difficulty setting. Then, pause the game and press Right, Left, Right, Left, Down(2), Up(2), Z, Nunchuck Down, Z(2), Nunchuck Down(2).
Secret Swordfish weapon
Successfully complete the game on the Hard difficulty setting. Then, pause the game and press Up(2), Down(2), Left, Right, Left, Right, Z, Nunchuck Down, Z, Nunchuck Down.
Video mode
Successfully complete the game on any difficulty setting to unlock Video mode.