Stronger Characters:
Beat the game with either character and save. Start the second game with
the saved info. When the second game is beaten you can start a new game
with your strength from your prevous game.

Infinite Platinum Coins:
At the main menu press X, X, X, X, X, Triangle, X, X, X, R2, R2, L1, L1
you hear a sound that confirm the code.

Catfight!:
After you get the dragon wings from Wylaf, in Rue’s chapter, go to the Inn
and save, (because’ you’ll want to see it again) now go in the Hotel. The
lobby will be empty, so go up the stairs to see a VERY funny exchange of
words (and blows) between Mint and Maya.

Retain HP & MP:
Beat the game with both characters and when you are asked if you want to
save (after the credits) choose yes and then you will be able to get a sort
of time trial adventure and you get to keep all the enemies that you killed
in the last level, the armor you had last and your HP and your MP. You also
hit as hard as you did when you beat the game. But with Rue, you don’t get
to transform into the monsters you had at the end of the game and I don’t
know what happens with claire though because I’m still playing Rues game.

Hobbes The Lush:
In the cave level, when you have to melt the block of ice as an animal (with
Rue), get more MP, and melt the block of ice beyond the original one and
get a rare wine.Sell it to Hobbes, and watch his prices drop.

Thanks to Revolution readers dono, Tim, Frosty, gismogurl65 and Nick Balsis!