When in the game, you can use the following cheats. First, you have to go to the “Code Entry” option which you can find at the “Extras” menu. After you’ve done that, enter one of the following codes to enable the desired effect:
Get infinite health: 94677
Get double damage: 34743
Get one-hit dishonor: 54641
Unlock all treasure maps: 37437
Get infinite stealth: 53467
Get infinite copper: 23637
Get infinite Chi: 24463
Unlock character concept gallery: 97831