RetroCodger426: Stalker mode can be quite frustrating (playing Shadow of Chernobyl). It takes about 90,000 direct hits to kill anything. The difficulty settings do seem very badly balanced. Increasing the difficulty actually seems to reduce the number of hits both ways, as Strijkbout said.
I tried switching to master difficulty. I don't really see any difference, except maybe I die a bit more easily (hard to tell).
EDIT:
As I describe in a separate
post, the problem was the difficulty setting was reverting back to 'stalker'. Now that I actually play in 'master' difficulty, I can confirm the combat is well balanced.
Thank you all.