I went to play it again to try and finish it and this time it was quite easy (less than 5 minutes), i didn't finish almost any modules (i think i only finished the System Control really) so that might have been a bug. But last time i finished all of them and it was VERY satisfying, even though i never managed to finish the game, so i feel like i did everything even though it wasnt in a single playthrough.
I actually played twice just now, on the first time there was a bug with the Air Lock where it said it was closed but i couldn't rise my life support knobs, so i restarted.
Again, Great game and so well thought of when looking at the assets, reminds me of "Uncle Chop's Rocket Shop" which is a very good game.