Very similar to Diablo 3 in playstyle with big "1m dps" numbers right as you get into endgame which only get higher with time and has the torment scaling difficulty system. Characters can switch skills and their talent trees for free so there is no point having multiple of the same class as there are no permanent or annoying to change decisions. The base 4 classes are pretty close copies of Diablo 3 classes as well. The art team took advantage of the Warhammer Fantasy license and some areas look great.
Hazy for me it has systems I don't like from Diablo 3, but I don't mind playing Chaosbane while I can't be bothered to pick up D3 ever again.
Edit: Unlike Diablo 3 (PC version) the game does not need to connect to a server to play the game.