This Mod makes NPCs almost or fully invulnerable against monsters.

How to install:
first:
copy the gamedata into the directory of your S.T.A.L.K.E.R.
it should either be here C:/Program Files(x86)/S.T.A.L.K.E.R. Call of Pripyat/
or here C:/steam/steamapps/common/S.T.A.L.K.E.R. Call of Pripyat/
or here C:/GOG Games/S.T.A.L.K.E.R. Call of Pripyat/

second:
open fsgame.ltx
and change the line
$game_data$ = false| true| $fs_root$| gamedata\
to
$game_data$ = true| true| $fs_root$| gamedata\

it should work now.


My Specs:
i7-2630QM up to 3ghz
nVidia GT540M
6GB DDR-3 RAM
Acer Aspire 5750g
runs on dedicated Maximum settings 60FPS