Excellent all around! Environment and atmosphere were great. I really like the cooling towers in the distance, adds a nice touch with people being so irrationally afraid of them. Why is it always spiders though.... lol Not a fan of spiders.
SPOILER:
STOP READING SPOILER AHEAD:
The ending was totally expected but still got me. Something you could have done that would have been similarly great is to have one last return to the dock, but this time the spider under the dock moves on top and when the player turns towards the noise, it JUMPS at them.