A man stabs another man in the stomach repeatedly, he screams, we see blood on his shirt and mouth, and he falls on the floor; he is then stabbed repeatedly in the back, then in the stomach again, and a woman screams (we hear crunching, yelling, groaning and we see a lot of blood).
A man uses a wrench to pull a tooth out of his mouth: his mouth bleeds profusely, he continues to pull and he screams loudly, and more blood pours from his mouth while a woman tries to stop him.
A woman uses a staple gun on a man's hand to keep him from getting into her room (we see blood on his hand).
A dead body is shown lying on the floor of a room, covered with blood.
A man and a woman pour gasoline around a room and on each other and then light a match (the room is engulfed in flames and it is implied that they burn as well, but we do not see them).
A man pokes his finger with a pin, smears a drop of blood on a glass slide and looks at it through a microscope. A man looks at a bloody tooth through a microscope and sees many bugs swimming through the blood. Blood is smeared on the floor from a man's bloody wounds.
A man and woman have scratches and sores from scratching and trying to remove "egg sacs" from under their skin.
A man strikes a woman in the face, she falls to the floor, and we see her bloody nose and lip. A man breaks a door open, holds a gun to a woman's face and pushes her into a chair.