I was on "easy". Anything else felt like getting my backside kicked. Constantly.
Hmm...my twitching skills aren't all that great but the difficulty in DKS was noticably nerfed compared to the original. I rememeber the challenge being greater in the original game on normal than it is on hard in DKS.
I think that's why I'm still leaving it on "easy": sometimes it feels like too much of a walkover, but having played ED pre FoV, I think I've more than done my duty when it comes to being pwned.
