I've downloaded it too. But I like it and will buy it when it's released here. The same things could be said about diablo II and DD. These are hack n slash as well, but they're good.
You have to remember that in DS2 it's a good idea to stick to a character class (combat/magic tree) whereas in DD you can cross level to your benefit. In a role playing sense, DS2 is more RPG that DD I think.
And the multiplayer will be awesome !