I really hate the fact that you need internet connection to play the game. It simply sucks. I payed 60 euros to play a SINGLE PLAYER game not a f*** mmo.
Anyway, apart from that it's a fun and very addicting action hack 'n slash game (no rpg at all). It's an over-simplified version of Diablo 2. I'm currently playing a demon hunter character on normal difficulty and it's ridiculously easy. I'm waiting to unlock higher difficulties. Nice graphics, lots of different types of enemies and pretty nice dungeons too, though I've expected them to be bigger.
Overall it's a good game, but a bit overpriced I think, and not exactly the game I expected after 10-12 years.
I'd give it an 7.5-8/10.