As is often the case, the Faustian bargain of doing evil that good may come of it takes your soul and gives you *nothing* in return. The devil is, after all, a liar. Just because he promises you gold, guns and girls in return for your soul doesn’t mean he’s gonna deliver and leave you to waste away like Citizen Kane in your palace reading Ecclesiastes and pondering the meaninglessness of life while you sip mimosas by the pool.
Very often, because it’s more elegant in hell’s reckoning of things, you wind up with nothing at all. Hell’s idea of a practical joke.