The graphical environment is beautiful and sound design is very good. The game has an intense, immersive atmosphere. I liked the idea of having to look to the side to be able to see the oxygen bar - it's a small detail but really adds to the feel of the game.
I tried the game a few times, only managing to pick up one repair part but never understanding how to attach it to the ship. Could have used more instructions. Also, the controls felt quite stiff. I kind of enjoyed it in a way as an immersive element - as it isn't too easy to move oneself in a spacesuit - but mostly it just felt really frustrating as I kept getting stuck and felt like I wasn't able to move the way I wanted to.
Overall, I think the idea is good and your game stands out (as a different kind of way for implementing the GGJ theme aswell). Well done!