I've never seen such a thing.. unless.. Thats familiar..
an isometric view like Diablo 2, coop like Diablo 2, but the "wild" magick-combos are fun to learn. The Story is kinda movie-based with all this nice little klishees everyone loves about this characters or scenes. Only one class but with sword and staff.. Its FUN. All the time you just goes from one smiling face over to the next.
Don't watch the Trailer. (The one on Steam), try the Demo first.. Otherwise you'll miss something.. I can't put it in words.. it's just a great game but a crappy trailer :o)