I would like to have some GodMachine boosted cultists/simulaca in the chronicle I am designing. They would be large, muscular, monosyllabic single-minded hunters (think Arnie in The Terminator). The players will first meet one when he steps out from the woods behind an NPC and snaps his neck.
How would such an attack like that work? Surprise can negate defense, but how can a single surprise brawl attack do enough damage to be fatal? Brawl attacks are just Bashing damage unless using a special martial art. Even if I give the character 0L attacks, it's hard to do enough damage to kill someone in the CoD system.
I could just describe the scene by fiat, but then in any subsequent fights the NPC will be no better than a muscular barroom bouncer.
FWIW I don't intend to routinely subject the PCs to surprise fatal attacks, but I'd like them to be nervous about grappling with these guys.