Just gave this a quick try and was a bit shocked, it plays quite differently (harder) than the Witcher:
-Combat with multiple opponents seems a lot tougher (no group style), I got taken out on my way to the Ballista right at the start of the game lol
-Seems to require the use of potions/traps/signs a lot more
-Something doesn't quite feel right with the graphics, everything is really shiny (excessive bump mapping?), a bit like Doom3?
I might actually consider trying this game with a controller due to the above comments by others, the need to Parry/Cast during combat makes it a bit fiddly with keyboard.
Got to agree on the graphics front, looks very shiny, since the controller support is pretty good going to play this as it shouldn't hurt my hands.
Had since launch, played 6 minutes i believe according to steam.