I had to watch the walkthrough to get the decontamination and lost in space endings. The game never tells us how to make the mixture that needs to be added to the bomb to be big enough for the ship. I thought that those three items were just extra, like the pancakes and ration.
I gave this 4 stars, would've been 5 if I could've turned off the in-room hints. I'd be merrily exploring, and the little glimmer would ruin it for me.