amuck, amok, berserk, demoniac, demoniacal, possessed -- (frenzied as if possessed by a demon; "the soldier was completely amuck"; "berserk with grief"; "a berserk worker smashing windows")
Overview of adv amuck
The adv amuck has 2 senses
amok, amuck -- (wildly; without self-control; "when the restaurant caught fire the patrons ran amuck, blocking the exit")
amok, amuck, murderously -- (in a murderous frenzy; "rioters running amuck and throwing sticks and bottles and stones")