Hopefully you already have an ATM built into your chest so you are already half-way to becoming the Dark Lord of the Sith. If that is the case then you just need the Star Wars Darth Vader Mask & Cape Set and you'll be in-like-flint! If you are just getting the Star Wars Darth Vader Mask & Cape Set then you need to work on the ATM chest thing. I think you can take a shortcut if you challenge Obi-Wan to a duel on top of some lava. That always works out in everybody's favor!