Play the Story Mode until you get a high score, then get a game over. At the High Score list, enter ".SD", ".LK" or ".AS" as your name. Now, at the Character Select screen (in Story Mode), press the following buttons:
Unlockable How to Unlock Haow-Ken Mode Hold Select and press Up or Down. Increase Energy and Specials Bar Hold Run and press Up or Down. Stage Select Hold II and press Up or Down.
Daikon Cut Minigame
Turn on the game without an Arcade Card inserted and you'll see a warning message about you needing the card to play the game. Watch the message all the way to the end and reset the game by holding Run and pressing Select. See the warning message a second time and reset again. By the third time, if you wait a few seconds after the warning message is over, you'll get the hidden Daikon Cut minigame.
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