Fight as Nox and Eve:
Complete the game using any character.

Fight as Neco and Modoki:
Complete the game using Nox and Eve.

View Neco's demo:
Successfully complete the game with any character, then hold Select + Start to restart.

Alternate character color:
Hold Select on controller two and press X, Circle, Square, Triangle, L1, L2, R1, or R2 at the character selection screen.

Additional levels:
Two additional levels well be available after the game is completed under each of the three difficulty settings for a total of six new levels.