That's a good and just score, the game is incredibly satisfying in gameplay but is lacking in some fields. The story is pathetic in my opinion, the AI is incredibly backwards and game is really short. There is also very little variation in enemies and events and it's way too easy to become overpowered early on with the magic abilities you get.
It's a really good game but no where near perfect. As for the visual style, I love it, it's designed by (among others) one of the lead designers on Half-Life 2's gloomy and damp style and I think it looks fantastic.