grab them here http://www.theuntitledgameshow.com/three-3-golden-keys-borderlands-2-pc-xbox-360-ps3-mac/ or watch them here https://www.youtube.com/watch?v=qD7zCwZDNmY
How to use shift codes:
- Sign up on https://shift.gearboxsoftware.com/ or from inside the game.
- Connect your new account to which ever platform you are using.
- From inside main menu of the game, go to “EXTRAS” then “SHIFT CODE”.
- From the Shift Code menu input your code for your system platform.
- Start up your last save file and head to “Sanctuary” to use your Golden Key to unlock the gold chest.