Alternate costume
Highlight a character, then press R at the selection screen.

Control loading screen
When the loading screen with the skull appears, use the Left Analog-stick to move the skull. Use the Right Analog-stick to move the word Loading.

Phade: Easy Kills
To hurt or even kill many opponents at one time with Phad, pick up an object and successfully throw and hit an opponent. You will get a Rune that resembles like a crosshair. When this happens, press Rune Attack and she will unleash a very long green blast from her hands. To attack many opponents at once, rotate the Left Analog-stick in either direction. Phade will spin around, causing her blast to spread apart and shoot in many directions, hitting anyone that is around.