I still didn't have time to check -and it will not be easy, because in all of my runs killed the Marquis earlier than Hagni (wings)-, but probably You knows the answer, is it impossible to fly behind the Marquis? (To kill Demenion).
Yes I agree, he is unmovable, but perhaps possible to bypass.
Yes, I've seen your level 1 distortion trial, but You didn't finished the whole game, aren't You?
and also seen the thinking about only peasents game, but haven't seen the end.
I almost sure, if You were able to do this 14 fight finishing only with droids, You are able to repeat it only with Black Knights, they are really very powerfull with eviln (Zlogn). I think it's not a bigger challenge, than the droids trial. (You have to take care only one single stack)
One more thing, You mentioned that the runes from artifacts via Neatness can changable.
I've tried it earlier in several ways to get different runes-crystals, but I always failed.
How it be possible??