I like the lack of contrast in the colors you used. The scene almost feels like it was frozen, there are hardly any dynamics. It's a weird remote area and one feels somewhat lost in there. Trees everywhere, like walls.

One annoying thing: There's always a small lag when a sound is played (e.g. one of the monster sounds).
At least for me.

And I don't know how to beat this game. Along the lines of "never stand still" I just ran into the Tunnel Creeper and died.