The game has a beautiful atmosphere, the music and the dark scenery with the light fit nicely together.
Howere there where a few things that really frustrated me while playing.
The time until your oxigen & light expires is way to short. It's simply no fun to have to go back to your ship every 30s (in the beginning) but even later on you can't go far to explore.
I also think the "floaty" controls are in conflict with the expire mechanics, because when i see that my oxygen/light gets low i want to return as quickly as possible to the ship (like a speed run) but the controls make that very hard, which leads to planning even more time in to get back, which then leads to even less explore time.
I think if you tune down one of the two you'll get a much better experience.