At the main screen, press Down and Start on the first controller, And press right simultaneously on the second one. Note that this only works for two players.
Contributed By: XLord Ma ChaoX.
In the two player mode, steal lives from the other player after they die by pressing A and B.
Contributed By: silvergolem2.
When playing a two-player game, if you come across a weapon that both of the players want, have them both touch the weapon at the same time. You'll both get it.
Contributed By: Baseman.
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