It's really an excellent Diablo clone. I don't consider that an insult, it's just a gametype. Some people dig it, some don't. I miss the awesome FMV scenes and battlenet, but I'd say the classes and uniques setting make up for that. It really was great playing a game set in Ancient Greece, instead of all the medieval style games.
Personally, I put in 20 hours before I got tired of the endless killing. But I enjoyed those 20 hours, and don't regret buying it.