@Bishopas long as my characters remain untouched I'm coolio :3
I didn't ask for permission to kill NPC but ask for the way on how* to kill them. So let's say your PC is a werewolf and I encounter another werewolf. I'll write that they can only be killed by a silver bullet to the brain or heart or that they can even turn during the day under intense anger or hunger. The specifications, the race weakness. So if you aren't specifying those, I guess I'll have to add them myself.