Cheat Devil May Cry 3

Unlock All Modes

On the title screen hold R1 + R2 + L1 + L2 + UP + LEFT on the D-Pad and DOWN + RIGHT on the left joystick. A sound cue will play and you should have all modes and costumes unlocked.
Submitted by bbbtggh
Verified by berserker_kev
Hold L1 + R1 + R2 + L2 + UP + LEFT then pull left analog stick down and rotate to right.

Bonus Art 5

Complete the game on Dante Must Die!
  

Hard Mode

You have to finish the game under the normal difficulty setting.

Bonus Art 1

You must achieve get a "C" on all missions in Dante Must Die!
 

Alternate Ending

During the credits kill 100 enemies to get a secret ending with Vergil.

Corrupt Vergil

Beat the game on Hard Mode.

Super Corrupt Vergil

Finish the game on Vergil Must Die.
 

Clear Bonus Art

Beat the game with Vergil.

Concept Art

Beat the game with Vergil.
 

Easy Mode

Die three times in normal mode.