Mihawk: beat very hard with zolo then do it agai, the 2nd time beat him using the secret attack (it doen't have to be full power secret attack)
Mr. 2 bon clay:get all the characters then beat story with them on every difficulty
Then beat story with sanji again on any difficulty then at the credits don't skip them hold L then press AAXA left AXBAXYXARR left.
We have more cheats and tips for this game here, One Piece Grand Battle! cheats
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