First-Person View
During a fight, press Start while holding Left on the digital pad. To return to normal view, hold Down on the digital pad and press Start.

Taunt Your Opponent:
Press C-Left + C-Right during the match.

View version date:
Press C-Left immediately after powering on the system. The sound of laughter will confirm correct code entry. The date on the title screen indicates when the game was completed. Note: C-Left may have to be pressed a few times.

Death Blows:
Pause the game play during a match, and disable shields. Then resume game play and hold A while attacking. Your character can now inflict lots of damage without being hit too much.