When this game is good, it's very addictive and fun. The lore is dark and fascinating and fun to poke around in, and the gameplay is intuitive, entertaining, and challenging. I had fun exploring every inch of the gigantic map and finding all the secret treasures and bosses to fight.
I got around 98% of this game completed, but I got burnt out on it towards the end. It just gets so hard that it stops being fun at some times. When I finally completed it I felt kind of empty inside, like I'd just bashed my head against a door until it finally opened. It's a good buy, and lots of fun, but I think I've had enough of it now.