Devil May Cry 3: Dante's Awakening Cheats

At the Start Menu, hold down L1, L2, R1, R2 and rotate the left analog stick until you hear Devil May Cry.

This is very subtle, but you can check an enemy's health by looking at the targeting reticle. It's actually made up of 4 seperate bars that deplete as you attack an enemy.

Complete the game with Legendary Dark Knight, lady will wear a new outfit while fighting alongside during the credits screen.

In the 3rd mission there is a jukebox in the bar. If you slash it with your sword you'll hear a remixed version of "Public Enemy" (a song from the original DMC) for a short period of time.

Kill 100 enemies during the credits to get a different ending screen.

Once you Beat the Dante Must Die mode, choose the Super Dante Costume. Then, the Devil Trigger will never lower!
This is Very Useful for Heaven or Hell mode.