Wildly frenzied and out of control:
— The soldier was completely amuck.

synoniemen: amok, berserk.

Wildly; without self-control:
— When the restaurant caught fire the patrons ran amuck, blocking the exit.

synoniem: amok.

In a murderous frenzy:
— Rioters running amuck and throwing sticks and bottles and stones.

synoniemen: amok, murderously.