In Hunted: The Demon’s Forge for the PS3 and Xbox 360, you can unlock an interesting mode called Adventure+ mode.
Adventure+ mode allows you to keep all of your gold and crystals from your completed game, and gives you unlimited arrows, one hit kills, and regenerating health and mana.
To unlock Adventure+ mode, you just need to beat the game on any difficulty. This will also unlock the Old School mode, which is the hardest difficulty in the game.