All levels

Go to the codes screen in the options menu and press Down, Left, Left, Down, Left, Down, Right, Down, Left, Down

More Special Features

Go to the codes screen in the options menu and press Left, Down, Up, Left, Right, Up, Down, Left, Right, Down

More Items

Go to the codes screen in the options menu and press Right(5x), Left (3x), Up, Up.

Get Difficult Mode

Go to the codes screen in the options menu and press Down, Up(8x), Down.

Get Normal Mode

Go to the codes screen in the options menu and press Up, Down, Up, Down, Up, Down, Up, Down, Up, Down.

Get Easy Mode

Go to the codes screen in the options menu and press Up, Down(8x), Up.

Get Old Soul Super Weapons

Go to the codes screen in the options menu and press Right, Up, Down, Down, Up, Right, Right, Up, Down, Down.

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