Berserk is a Nano Forge power that generates user with aura by energy around their body to rapid fire the weapon much faster for a short while, before it can recharge back again.
The Berserk is an excellent usage of energy to temporary saved up the ammos, especially when is almost running out. Every kill during the Berserk mode will increase Berserk timer, giving you more time to kill your enemies with charged weapons.
Very handy Nano Forge ability in the thick of combat. It can also upgrade it to project an energy explosion around you on a regular basis, inflicting damage to anyone who comes near.