You get stars for certain exceptionel archivments. Losing crew members is not helpful :-) What do you mean with game over? "Talk to" improves mental health. SInce you can't produce oxygen, meditation is the only way to reduce consumption to build a stock necessary for expeditions. When strange things heappens check the mental health of your crew members. When somebody is in the last two states, strange things may happen. Arresting prevents someone with very low mental health from doing stupid things. Check you supplies after picking up the backpacks. Check the crew mental health after picking up the personal items. What the corpse is good for you might find out in the end :-)