>>723169613
>that the hero has to outsmart/subvert.
Those stories in the historical Christian context have this as the trap and central irony, not an actual achievable goal. The Devil doesn't do deals with random idiots. He does deals with prideful people who think they can outsmart the Devil. They can only save themselves by giving up on their pride and appealing to God to save them. Which is always an option, so the Devil's game is to keep the victim focused on trying to outsmart the Devil instead, and get corrupted along the way.
In fact, in possibly more theologically sound terms, the deal is completely bogus anyway. You have no right or power to sign away your soul, and the Devil no right to claim it based on some made up deal. But you're likely to do evil things with the Devil's gifts, and even worse things teying to wriggle out of the "deal". And then you'll go to Hell for that anyway.