I like this dark mood! Colors, sounds and movements of the character are great.
I am not a master of the genre, and I have been killed too fast to say something about combat system. But it is not problem of the game. Maybe for the noobs like me it would be good to have simple battles at the beguinning.
I like exploration part, besides ones I lost my character when he ran somewhere into subspace and became invisible for me for some time.