Yeah, so I picked up Manhunt. It is hands down, the most gruesome, sick, violent game I've ever played. And I love it!
It's The Running Man meets 8mm. The whole game is set up to be a snuff video series, so each time you creep up on someone and 'execute' them, it cuts to a video animatic of you disposing of them in a horrendous fashion (like strangling someone w/ a wire till their head falls off).
But the best part: you're guided by 'the director' as you play. And it's Brian Motherfuckin' Cox.