I played through this demo. It worked fine. It seemed a little easy, though I played as an Arcanist and having the ability to teleport away from the area attacks in the boss fight might be just the challenge that that kind of class would excel at.
I had some pretty serious audio issues and I'm not sure if it's just because I'm playing on a crappy laptop. It didn't really take away my enjoyment of the game. I'm looking forward to what's done with the game. Excellent work.