Another awesome game from scriptwelder with great atmosphere. My main observations/complaints:
1. It seems odd that the player is unable to leave any logs of their own. The Decontamination ending, for example, because removing all traces of the crystal doesn't necessarily mean you'd want to hide what happened, and Hull Breach because you can't be positive you are removing everything (it even says 10% left). Why not leave the logs in an empty escape pod or the entrance, or at least scribble "infection aboard" or something?
2. If I blow the lab up while outside and then let myself suffocate, the rescue team apparently still survives with 40% contamination (although I don't get the Hull Breach achievement).