Is Vigor intended to be the combat stat or perhaps Agility? Or maybe it would depend between both of them according to the character or their combat approach and weapon?
In Sledgehammer there is a clear Weapon Skill, but not in BRIGHTHAMMER.
Thanks for asking. I've intentionally left that vague so that the players and GM can decide which stat makes the most sense based on the situation.
However, if the PC is doing something that relies on strength — like swinging a broadsword — Vigor is a good default stat. If they're doing something more precise — shooting a bow or using a rapier to target a weak point — Accuracy is a good choice.