Frenzied fighters make fast and furious melee attacks, sacrificing finesse for raw speed. This allows them to make an extra Fighting attack per round at a -2 penalty to all Fighting rolls. This attack must be taken at the same time as another Fighting attack though it may target any two foes adjacent to the hero (Wild Cards roll two Fighting dice and one Wild Die). The -2 penalty is subtracted from all attacks.

A character armed with two weapons still only makes one extra attack.

Savage Worlds Deluxe Edition p. 38