I enjoyed the game, though I had problems with the oxygen leak part.
Viewing post in I'm Also Here - A Spaceship Engineers Tale (Alpha) comments
Hey, replied on your video, but thought I would leave it here for any new players!
The trick with the oxygen system is to identify (Outside of REPAIR mode) the affected sector by holding a click over each zone till one appears RED, then hitting the REPAIR button and holding a click over the broken sector.
Sorry you were left out in the open by yourself to work it all out!