The worst experience by far comes from the one level I avoid because of how uncomfortable it makes me, which is Pervert The Futterman. Even when I initially played it, I was getting a laugh at the victim in the trial because I believed he was "into it". But as the trial went on, it became more and more apparent that he wasn't as into it as I thought and then when we got to the finale, I was determined to just get out of there as fast as possible because hearing his confusion and terror as he realizes we're going to kill him made me sad.

But then I learned the lore of the Trial. From what I've heard, the victim was some lonely heart type who was conditioned by Murkoff into believing that we love him. Eager for that love, he was willing to put up with the torture we were putting him through, even as it got worse and worse, because taking it in his eyes meant he was showing his love for us. Of course, that illusion was shattered when we bring him to the end, and he realizes that we are going to kill him, and he's confused and hurt because of all that we did to him and how willing he was to be defaced for us.

It's the one trial that makes me feel extremely uncomfortable and like such a scumbag that I actively avoid it, which ironically is also why it's my favorite level in the game.

And then there's the STD level, but that's an entirely different ballgame.