If I remember correctly.. in story mode you had these 3 challenges between fights... 1 you could increase the spirit meter the other the life bar and the last one was that you could learn the Hadouken (but then the Art of fighting version) if you succesully completed the fireball moves a few time in the bonus round you would have learned it and kept that move till the end of Story Mode..
it wasn't related to difficulty or beating the game.. it was part of Story Mode







Face the future.. Gamecenter ID: nikkom_nl (oh no he didn't!!)







