Successfully complete the game to unlock a mini-game specific to the character you used.
Successfully complete the indicated task to unlock the corresponding character for purchase at the shop:
During the credits, press A, and a simple platform mini-game will replace the black background, with you in control of Doronjo and her subordinates.
During the character introduction cinematic before a match begins, hold [Partner]. You will start the match as your partner.
After winning a match, press Plus at the "You Win" screen to move your character around.