Looks and sounds really nice! I like the designs of the different modules and the music loop has a catchy melody to it.
I found it rather hard to control since it was always so floaty and the rotation of my construction shifted dramatically all the time so aiming is a real pain. I also felt that it's hard to control what to build where since you're under all this time pressure constantly. I think it would be nice if it had some kind of separate build mode without time pressure in which you can attach modules you collected with higher precision and a better plan.
Overall it reminds me of a game I once worked on where this same issue came up that the building was also running in real time and didn't give players enough time to construct things the way they want to. Pausing time during building solved that for the game.