No More Room in Hell the long awaited Source zombie modification.
A small and simple mod that makes everything lighter (weigh less), and causes all guns (except the .22's) to give one-shot headshots! Oh, and some of the melee weapons do more damage, too. NOTE: This should work with all versions of NMRiH up to 1.09, if anything new is added after that update then I'll mod it and release a new version. Enjoy!