great work. really enjoyed this. the hard light and shadows do a lot to sell the look. love the props. the UI feels really diegetic despite just being text. the velocity UI element is great.
I totally feel like the shotgun should push you back. seems like it would be a great feeling? maybe you could also have some resource management with the flashlight battery. oxygen and propellant were great but I didn't find myself caring too much during the game -- but that's fine and probably intentional.
I really liked the reload interface, which reminded me of a stripped down receiver. when engaging enemies though, I never felt like I was taking any real risk. making that more impactful I think would go a long way.
in-world text was great too. awesome job!