I was enjoying it quite a bit, but I suspect I'm hard-locked from not being able to collect the Skeleton's item. I think I've checked everywhere else, and can't find Green Level access.
It was a lot of fun finding my way about while it lasted, finding locked off areas and finding the right keys. Only criticism is that Life Support should be auto pinged when you access the wall device, rather than selecting it, being thrown out, then having to access again to save.
Great work overall!