If you didn't find it challanging up the difficulty, 'cus personally I found it REALLY difficult on the higher ones making you kite and micromanage everything like crazy. Dueling the Aroshak(or whatever his name was) with my archer was a pain >.<
I'm not sure, the article yesterday said an ancient grey warden prison. I thought the architect was off wandering around still trying to to help his mindless brothers.
Here's a screen cap of the guy in the video. I think it may be something like the architect, except not as nice. Either way it does look bad ass.