Level select: Quickly press X, Up, Right, Up, Right during game play. All weapons: Quickly press Up, Down, Left, Right, A, B during game play. God mode: Quickly press Up, Down, Left, Right, Up, Down, Left, Right during game play. Invisibility: Quickly press X, B, A, B during game play. Kung Fu fists: Quickly press Right, Down, Left, A during game play. Minigun: Quickly press Up(2), Down(2), A, B, A, B during game play. No knock downs: Quickly press Up, A, Up, B, Y, Up, X during game play. Kill all spawned enemies: Quickly press A, B, Y, X, A, B, Y, X during game play.