I shot a guy 1-2 times in the chest and once in the head and he didn't die? I heard the headshot sound and saw my sights on his head and the blood spatter from his head but he didn't die and killed me.
Saw someone else hit an enemy probably 7-10 times in the back, they didn't die. The enemy was a female model and was prone while he shot her right in the middle of her back multiple times. He then tried to knife her. Swung 2 or 3 times crouching right above her and nothing registered. She shot him and killed him.