I've tried to kill a PC once. But I always roll in the open.
He acted really stupid, kinda telling the big mafia boss in town that his mother works at the docks and his sister is pregnant from the husband of his daughter who mistakenly thought her to be of his favorite horses...
He got chased by half of the town over the rooftops, through the sewers, around the harbour and two days into the wilderness... but he survived. Sheer luck, horrible dicerolls, not one will save failed... melee battles against four fightertypes at once...
He survived. After his bodycount got at about 60, another mafia group in the town took the chance and overwhelmed his enemies...