Best kill?

His death was the only actual graphic one. Kemper's was off screen after he was hit with the sledgehammer, Pepper with a cut in the back but it was just as brief. I don't think they focused too much on Morgan's either but I tend to look away because of how he was killed.

Andy had it the worst. And Eric in the beginning he was still alive after all that torture.

Morgan got sliced through the torso crotch-first. And this is after he had been through hell since everything went sideways.

Either way, the fact that he was sliced through his genitals before dying easily makes it the worst death. That was just gruesome.