Cleon Peterson's primary color paintings of athletic, sadistic violence in 2D are pretty awesome even though (or because?) they make me a bit queasy. The subjects fight in a bleak, context-less place like slaves did in scenes from the walls of a Pharoah's tomb.
The three shown below are 1) a horrific war of bodies stabbing and choking each other, 2) a scene reminiscent of police beatings filmed as of late, 3) what looks like a match between two luchadors. (Not really, but kinda.)
Whew. Rough stuff. And the others (or the feeling of viewing dozens of them at once) are even more chilling/terrifying/sickening/moving. I'd suggest you go see them by visiting cleonpeterson.com.