[Suzerain of Sheol]

I couldn't put the game down for about a month when it first came out, played through it with two characters up to level 50 or so, but then... I just lost interest.

My main gripes were the lack of variety in enemies, especially at high levels; the saddening disparity between unique equipment and the overpowered stuff you can craft (even without any exploits); how short and uninspired (in my opinion) the main quest line was; and how tacked-on and likewise-short the various guild questlines were.

All in all, I feel like the game has a huge WOW! factor, but once you really dig into it... there's not all that much to it. Raiding a randomly-generated bandit camp for the 300th time got kind of boring for me after a while. I would've liked to have seen a lot more variety in pretty much every aspect of the game to increase replayability.