Extras

To activate extras, start a game, or have a game already saved. Go to "Extras" from the main menu. Go to code entry and enter these codes for the corrosponding unlockable:
Unlimited Copper - 23637
Neverending Stealth - 53467
1-Hit Dishonor - 54641
All Treasure Maps - 37437
Double Damage - 34743
Unlimited Chi - 24463
Unlimited Health - 94677
Character Art Gallery - 97831