After you have created a save file, go to that save file's main menu then enter these codes
Unlockable How to Unlock Unlocks Iron Spider Suit Up, Right, Right, Right, Left, Left, Left, Down, Up Unlocks Negative Zone Suit Left, Right, Right, Down, Right, Down, Up, Left Unlocks Scarlet Spider Suit Right, Up, Left, Right, Up, Left, Right, Up, Left, Right
Contributed By: lizard81288.
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