All I can say is, if I was stuck in STALKER, my in-game life would go one of two ways:
The 'unlikely' way: I'd grit my teeth, grab my LR300 and get blasting...
or...
The 'almost certain' way: I'd crawl into somewhere safe and assume the fetal position
Then again, I'd be like Copter, and I'd probably have taken Viva Pinata, in which case I'd spend my time growing thousands of chilis to fund my hunt for a Galagoogoo.