Very nice, plenty of stuff to like about it. The ambiance is there, and the torch/unlit area works well, there is varied tiles and it looks great all over. Monsters were so unrelenting they attacked me in the vent a couple time. I did not manage to find the exit. I kept being stuck in the bottom section/unlit area. I did find my way up a couple time, but I was persuaded that the exit was there, until all my crew got eaten up. The movement are a little floaty, and adding something to denote the steps (sound effect, some slow down or a little shake) would give a better feel.
I like this entry. With sounds on, I would probably have been too spooked to play ahah.