Infrequent gun and hand-to-hand violence with some blood and wound detail.
An autopsy is shown; it is largely non graphic with split second shots of the organs. At one point the two people conducting the autopsy search through the subject's stomach contents. Again, non graphic.
Flashbacks of two men having received multiple wounds and injuries are shown, in bloody detail. This is likely what the "bloody images" in the rating is referring to. This is the most graphic scene in the film, but still isn't very graphic.
A man adjusts the alignment of a woman's broken wrist. This is offscreen, but we still hear her groans of pain.
A man is punched and smacked several times in the face, being knocked to the ground, causing his glass eye to fly out.
Woman shoved in front of car, run over, body smashed underneath car.