Wonder how to farm keys in Act 2? Vault of the Assassins (VOTA) can help with that! Get your stacks quick and easy, and then head out to start farming your keys in the Dahlgur Oasis. If you're not sure what this is, watch the video to find out.
An added bonus here is that this is one of the best, if not the best, areas to farm Demonic Essences as well. So, really, you're going to be farming Demonic Essences as well as your Act 2 key to make your Infernal Machines, which you'll need to go after Ubers for your Hellfire ring components. Weeeee!
Watch it now!