I mean now that we know, that Durge is indeed the serial killer there is the question, if a redemption arc is possible. I guess only if the Durge was indeed forced /controlled by another entity, Bhaal or whoever. In that case, it would be interesting to break free of that influence and take back your life and your free will. If Durge is a serial killer and psychopath by their own doing, then I don't know how that can be possible.
In a world with actual gods and magic, it seems like it should be possible to achieve redemption in the eyes of at least one of the gods.
