At some stage in my quest I want to implement a constant running part where the player is sent out to kill local guards as targets of opportunity for the player, each one killed notchs up a kill count for future reward.

Not sure what to setup for the reference alias GuardVictim? I set fill type as "In Loaded Area" and "Closet". In conditions I'm using GetInFaction, GetStage, but I'm not sure what to use for the player killing the guard?