This one is the biggest modification of mine so far, updated to Anomaly 1.5.1. Since the fist STALKER game came out, I was not happy with radiation. In the game, it worked completely unrealistically.

Drink water, go and sleep for 10 hours, weake up and lose health of dehydratation. This is over now. A new age of dehydratation has arrived! This mod rebalances thirst and water intake completely! Including losing water while bleeding!