No Sleep No Death

If your para's sleep need reaches zero, they pass out for about 30 minutes instead of dying. You can cancel the animation. After about 50 in game minutes after regaining consciousness, it will happen again unless you sleep.

I was not able to make it so the sleep need replenishes when they are "passed out". You will get negative status effects and a delirious emotion that will go away once you sleep. The delirious status effect prevents your para from learning any skills.