Shaman King: Soul Fight

Alternate Costumes
Beat story mode then hold START and press A while selecting the second YOH or the first TAO REN to unlock their alternate costumes.
(Thanks to angeldragonstar@hotmail.com)

Onake Mode
Complete the game then save the game to unlock.
(Thanks to jiggly46@hotmail.com)

Shaman King Mode
Complete the game then save the game to unlock.
(Thanks to cyanter@hotmail.com)