DraQ
Arcane
Humans and common mutants tend to die from one shot if you hit them squarely in the head, regardless of the difficulty and weapon you use.
If you merely pierce the tip of bandit's hood, or gun and run Holywood style, effectively plinking random objects all across your FOV, yeah, it will take more "headshots". Also, guys wearing helmets, like guys Berils, can withstand headshots from weaker guns, if they hit the helmet, rather than their unprotected faces.
As for the respawns, they should have given them about a day of delay.
If you merely pierce the tip of bandit's hood, or gun and run Holywood style, effectively plinking random objects all across your FOV, yeah, it will take more "headshots". Also, guys wearing helmets, like guys Berils, can withstand headshots from weaker guns, if they hit the helmet, rather than their unprotected faces.
As for the respawns, they should have given them about a day of delay.