Two Player Mode
Have the Doppleganger Style equipped (first you must unlock it on either Stage 16 or 17) and have a second analog controller equipped.
Then press R1+O and a second Dante should be standing next to you then press Start on Player 2's controller and now you should be able to control the Shadow Dante.
Please note the camera only centers around the real Dante. Also, Shadow Dante is invulnerable and can cause damage.
But don't worry about getting hurt because they don't waste their time hitting you. They'll only aim for the real Dante.
More tricks, tips and cheats for this game are right here - Devil May Cry 3: Dantes Awakening cheats
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