Great atmosphere in those screenshots. Downloading now!
EDIT: Okay, here's a quick review.
Good:
The menu screen was great. The music was creepy and fit the game very well, as did the sound effects. Lighting was very nicely done, and added to the atmosphere. The level design was pretty nice as well. I ran out of shotgun shots, but I found the room with extras shortly after.
Bad:
The level was
huge, and as a result, the average framerate was around 20. It was also frustrating coming to 4 way crosses in the vents. Some of the "scare tactics" were a little startling, but nothing too scary. The most scares came from the atmosphere and music itself. Also, the enemies were easy to kill, and didn't add to the horror factor much.
Overall, it was still fun to play, and pretty good compared to most FPSC games. Best of luck in the contest!
*This post will self-destruct in 10 seconds.*