leusid

Have you considered adding more effects of sleep deprivation? Blurred vision/varying light levels or brief blackouts might make sense for first symptoms as the survivor struggles to keep their eyes open. Auditory hallucinations would come next, maybe including some wolf sounds to scare you. If you wanted to go even further, eventually visual hallucinations could set in, and again I can imagine an example being: you turn around and suddenly a wolf is lunging at you snarling, then disappearing as you fall over ready to struggle. I dunno, something like that, making it both more interesting and more punishing to forego sleep too much?