I think the atmosphere of this game is it's main point which I think is great. The narrative is a bit difficult to follow but it's still nice. The movement is nice, SFX are really good too.
The world has a lot to offer but there's not a lot of incentive to explore, I thinking giving the player a reason to explore and having timed events happen would be very cool.
The voice acting is done pretty nicely as well.
Expanding upon the world and giving the player reasons to explore it would work really well imo.
Some bugs I think I found would be that there are some things in the environment that you can't scan. Also about the scan UI, I would suggest make it a bit less in size so that if there are multiple of them they don't over lap. Also the collisions of objects need a bit of work as well.
As a prototype this is incredibly well done.