I have just played it as well, and I have got to say I'm a bit conflicted about it. I definitely liked the atmosphere/setting/story more than Limbo, but I felt like there wasn't enough actual gameplay, if that makes sense? As in, there is a lot of just walking right in this game, but I can't say I didn't enjoy what I played.
I played through it yesterday morning and these are my thoughts too.
The later parts reminded me of Gish though.