Pretty much perfect entry, didn't expect a scifi game with those sprites at all and as so many others states, the atmosphere is great. The voices are really adding to the game as well and I liked the adventure game nature of collecting items in different rooms to progress. Controls felt great too, only thing I would improve would be to make the contact area that lets you pick up items a bit larger.
I encountered some minor issues with getting off the map in the storage room, where I could just jump back in though, so it was no big deal. But two times I got completely cornered by spiders when I was in between doors, and they blocked both exits. This is especially an issue when you leave a hallway, get into a room, a spider gets towards you so you turn back only to see another spider blocking the hallway now and you're stuck. Other than that I don't have anything to complain about, very impressive!