Some mild and brief references.

A dog is found in a trash can, beaten. It is not dead.

A gagged/bloodied man has a large metal bolt drilled through his foot. We see the aftermath. Extremely brutal.

A man's severed arm is found in a trash bag.

A man kills another man. Happens offscreen.

A woman used to cut herself. Scars are shown.

A man shoots another man in the throat, tons of blood pours out, he is then shot in the head, killing him. Blood pools beneath his body. Bloody but not overly graphic.

A man is run over by a car in reverse, then run over again going forward. Not bloody, but the man is shown laying in the street presumably dead.

A man is shot in the head inside of a car and blood spatters on the windshield.

66 uses of "fuck"

A few other milder profanities such as "shit", "asshole" etc.

Cousin Marv is seen smoking on multiple occasions

Frequent drinking

References to drug use

Several characters can appear to be intoxicated

The film is extremely intense.

An arm is found bloody.

A man is killed. Very sad.

A man shoots another man in the throat and then in the head, killing him. Bloody