Hate demon wall's repel? NOT ANYMORE!
So don't quote me on this, but I think I've figured out a bug that negates the repel.
So when the wall is about to cast repel, just move your character very close to the wall but not touching (pics would help but meh), sort of lets say 3 feet from the all (if you can imagine).
Secondly you must hold down your right click (the one that controls the camera angle) and inch forward a little as its being cast.
Today I am 4/4 for successful repel dodges.
** edit.. I'm pretty sure whomever said SS is what does it, is the winner.