I guess I'll go in order of my own ratings, and try to detail why I gave them that score.
Story (4/10): I actually enjoy the premise of Tokyo Ghoul, and the story in the manga is much more fleshed out, and genuinely very good. This is an anime review however. I understand that there it's a big challenge to condense the contents of the manga into 12 episodes, but the attempt was very lackluster. You get the basics, and not much more. Government vs. Ghouls with a side dish of some bad ghouls thrown into the mix. It's enough to get the idea of what you're watching, but without actually knowing anything really (if that makes sense).
Art (7/10): It's good. That's it really. Quality animation, that doesn't really get lazy. One of the good points of this anime. A lot of people mention the censorship; it's stupid, but not a huge issue.
Sound (7/10): Unravel is a fantastic opening, and the ending is nice as well. Not an amazing score, but definitely noteworthy.
Character (3/10): This is the major downfall of the anime in my opinion. There is just so little to the characters that it's sad. Kaneki is obviously the focus, but his development is so poorly done that I don't find him even slightly interesting until the literal end of the series. On top of a main character that is bland, the supporting cast are either equally as bland, or have so little screen time that they feel like an afterthought. There are some shining stars that manage to stand out amongst the cast (The Gourmet and Mado come to mind), but they are quickly brushed aside to make room for Kaneki crying and Touka being Generic Tough Girl #1.
Enjoyment (5/10): I won't lie, there are some enjoyable moments to be found here. I found the scenes with the CCG to be among the best, and the last episode was the highlight of the series (not really hard to be the highlight of this series though :^) )
Overall (4/10): Objectively speaking, it's not horrible (subjectively speaking, I hate it because it butchered a fantastic manga). It's got some good things going for it, but the bad heavily outweighs those bright spots in my opinion. Overall, to me, this anime is very overrated. If you want something fulfilling and genuinely enjoyable, go read the manga. I'm not a manga elitist at all, but there are huge differences that make the manga a far better experience in this case.
