Start off using continues while completing one of the first three levels. An option for the easy difficulty setting will appear when starting then next level. Once easy difficulty is selected, you will be locked into that setting for the rest of the game.

Beat the game to unlock the hard difficulty setting.

Beat the game under the hard difficulty setting.

Beat the game in legendary dark knight mode.

Beat the game in Dante must die mode. Dante will be able to change into a demon with unlimited magic.

To charge up a bullet(s) from Dante, go into fighting mode(R1). Then hold the fire button for about 3 seconds and dantes gun or guns will glow with devil power! If the handguns are equipped, Dante fires 3-4 super charged bullets. If the shotgun or any other single-shot weapon is equipped, he will fire 1 devil shot.

During mission 4 (Black Knight) once the mission starts, head back in to the phantoms chaple wich will take you to Secret mission 2. From there let the time limit run out! Then kill all of the little spiders. Wich will give you 150 red orbs "cash". Then leave the chaple and repeat until you are satisfied.

Works Best in Mission 9, You can get all the red orbs you want with this simple trick. Go throught the mission killing everything you can get your Ifrit on, Marionettes, Fetish, Blades, everything! collect all the red orbs in the level. At the very end of the level, SAVE. do this right before the end! Reset your game and load your newly saved data... You'll start the mission over with all the red orbs you just got! Rinse and Repeat... always repeat!

To unlock All Star Group Photo you must get S Rank on all missions.

Clear any mission from 1-3 using continues, and there will be an option at the start of the next mission asking if you wish to change to Easy.