Hmmm. Would Arty know anything about these creatures? My first assumption would be undead of some kind. I think Arty will keep his action, since buffing himself up is the obvious first step against a large group of enemies, but if he looks around, would he recognise anything "Familiar" about these creatures? I would imagine that if they're undead, Arty would have a better chance of identifying them as such given his...experience in the matter xD