The main character is a bit of a sadist and clearly derives pleasure from hurting other people.
A woman is tortured with a pair of pliers. This is off screen and only implied.
The hero slams a man's hand in a drawer in order to force him to relinquish a key. The man shrieks in pain, and the camera lingers on the face of the hero, who clearly relishes what he is doing.
Quite a few fist fighting.
A man is crushed by a car and killed (not graphic).
A man is shot. No blood or gore.
Another man is shot.