About the deal with Mephisto: apart from Astarions word , there is no evidence to either, but I would be very afraid at that point to deal with a devil. ... The game shows you the whole time, how bad devil deals are and that the other party always looses, so I'm paranoid.
And that the contract can be broken, renegotiated, or circumvented. Like in Will's case. Mizora promises it's not over. But that could be either true or words to the wind, since she's been tricked (if you save Reivengard in the Iron Throne, In the epilogue, six months later, the Duke is still alive and well). Talking about what will or won't happen is pure HC since no one knows.
Gale seems to be no fool, after meeting Raphael he offers to outplay the devil on his own field, while Will, who has tasted the treaty, says the devil will take everything and much more. They could both be right.
The game also has transactions with the devil, without losing your soul. Kill Orton - Secret of the Scars. Hammer - Crown of Karsus. If they are not fulfilled, you don't lose your soul, you just don't get what you asked for. What's not transaction a 7000 souls - power?
