Two men argue then the younger of the two (a teenager) gets wrestled to the ground and punched repeatedly.
The first half of the movie is more or less bloodless. It's the second half that's full of blood and gore.
There's a couple scenes with lots of rapid fire imagery featuring blood and gore in extremely disturbing, albeit nearly indecipherable contexts.
Characters walk through an abandoned building with bloodied people in it.
There are painted depictions of violence and gore on the walls.
A man is hit on the head with a sledgehammer, blood trickles down his face.
A man is graphically disemboweled, the camera never cuts away.
A man has his eyes gouged with a sharp blade, again- extremely graphic. Shown in closeups.
Another man briefly licks the gouged eye.
A man's throat is cut, another man rubs the blood all over himself.
Closeups of the slit throat, someone pulls a small object out of the gash.
A man gets a small object jammed into his forehead. No blood shown.
A man gets his head caved in, this actually act is obscured by the camera angle- but lots of blood spray is seen.