It does keep you in the dark a lot and that can get irritating, but that's part of what keeps you hooked. To some it is predictable, but I don't find that to be an issue, what's great about the series is they do it in a new way.
Art: 10
Looks fantastic besides a few blotches here and there due to the studio not managing their time very well, but as far as I'm aware, they did fix those issues in the BD/DVD releases.
Sound: 9
Hiroyuki Sawano did a great job with the soundtrack on this anime. Some people like his other works better, but that doesn't make this one bad. The music sets the mood as needed.
Character: 9
This anime is more plot driven than character, but the characters are there enough where I don't feel like I should give it a lower score. I still care about the characters even though some people don't.
Enjoyment: 10
The way the other elements are put together push this score to a 10, which is where a lot of the hype is stemming from.
Overall: 10
If you go into this show with certain expectations you might be disappointed, but I don't think that makes the show deserve a low rating. SnK is shonen done right.
