This was cool!! I got soft locked a little ways in, here : 
Once I went in I wasn't able to get back up over that lip on the floor there. The monsters were creepy, I liked the eerie droning of the music. Felt very creepy space. I could see monsters through the doors - this didn't bug me but what DID kind of bug me was I had to stand right next to the doors to open them. I really wanted to hit open and then step back and it felt awkward I had to stand there while the monster attacked. I see what you're going for and aside from the few glitches, it felt fun!