Several characters getting eaten, beaten, stabbed, hanged, strangled, impaled, shot, and poisoned - all in a supernatural context and with no blood or gore.
Most of the eponymous carnage occurs in such dim lighting that most of the gory details are hard to see, significantly reducing the grossness component.
Eyes are gouged (onscreen but no gore shown).
A headless body is seen briefly.
Carnage uses two of his tendrils to brutally impale two prison guards. He is also shown killing guards by throwing them around, biting their heads off, and brutally impaling a guard with his tongue. Very little blood shown, but still pretty intense
While driving in a newly stolen car Cletus talks to Carnage in the rear view mirror, and they make a deal to help each other. Carnage then extends tentacles from Cletus and picks up a truck in the lane beside him and throws it off the bridge out of the way. A man and woman scream
Someone is stabbed, but no blood or gore is shown.
Carnage bites someone.