I played about two hours as a rogue. I like it overall and the graphics are good enough to get the job done without needing an overly powerful pc. I'm using a 8800GTS card, q6600 @ 3ghz, 4GBram, windows 7 , 1680x1050 and had no fps problems.
The one issue I have is the combat. It is VERY fast. You can pause it with the spacebar and give new orders, but the time between actions is so quick that to control 4 party members is a lot of work. There is scripting you can do to customize your parties actions but I haven't had a lot of time to look at it.
One thing the installer does that I did not like , it installs the updater as a windows service. I see no need for that.