I should start off by saying that this is one of the best games I've played in the jam so far, and I wouldn't be writing this long of a comment if I didn't enjoy the game.
Really enjoyed playing this! The first time I tried it was late at night and I got too spooked after the first encounter with the alien to continue, but the second time I was able to make it a bit further. I thought the sound design was quite good, and the pacing and storytelling through HUD popups was tense as well. I did have some gripes though.
First, the map was way too confusing. Most of the corridors looked the same, and there wasn't a very cohesive system to room placement. I think this is best illustrated if you imagine having to actually live/work on that space ship. It would be hell trying to get from one place to another, and you would probably get lost easily. I think this could be remedied with varied corridor sizes, shapes, colors, etc; a more practical layout theme that feels realistic; and possibly a minimap or HUD indicator for where you need to go.
Second, I think that the limited quantity and effectiveness of ammo is too much of a challenge for the player, especially with the very limited alternative options available. Perhaps there's a lot more ammo that I didn't find during my forays into the game, but it felt like as soon as I ran out of ammo, I was dead in the water. In games like Alien: Isolation with similar limited ammo systems, the games prevent the player from falling to helplessness by offering a multitude of alternatives to shooting wildly like stealth and distraction. With this, as soon as I ran out of ammo it was "game over man."
Other commenters also shared opinions that I agree with on other problems in the game.
I'll wrap up by saying that I'm only giving this much criticism because I enjoyed the game, and I think it's worthy to take time and effort to offer this amount of feedback.