On a more concrete level, many players are reporting all manner of gameplay bugs and performance issues with the game. These include freezes, crashes and memory leaks along with less serious but still annoying stutters and frame rate drops -- two issues that we experienced first-hand during our play time. Ubisoft has acknowledged an issue with Nvidia Series 6 cards, though the currently offered solution (to revert to old drivers) is hardly advisable. If you're unsure as to whether you'll encounter problems with your system, the best advice is to wait until Ubisoft issues a patch (currently under development).
It's easy to be disappointed with Dark Messiah, given that it had so much potential. There is still some compelling content in here, though you'll frequently have to exhibit a good deal of patience if you want to enjoy it. As for the multiplayer, well, it's anyone's guess what till happen once fans get their hands on the SDK. Right now, though, Dark Messiah of Might and Magic is little more that a novelty, a game with some great ideas and poor execution.