Path of Unbound Fury

For some barbarians, the full extent of their bestial fury can only manifest when they are hopelessly outnumbered. The Path of Unbound Fury is a path of unbridled violence; Barbarians who walk this path leave hordes of slain foes in their wake.

Cleaver

At 3rd level, you are most deadly in combat when surrounded by enemies. While raging, when you take the Attack action, you can also make a separate attack against each other hostile creature within your reach. You must roll each attack separately. 

Furious Retaliation

By 6th level, you have become so accustomed to being attacked that striking back has become second nature. When a creature within reach hits you with an attack, you may use your reaction to make an opportunity attack against them. You have advantage on this attack.

Channel Rage: Provoke

At 10th level, you learn to channel your rage to provoke others. As a bonus action while raging, you unleash a battle cry infused with boundless rage. Up to ten creatures of your choice within 60 feet of you that can hear you must succeed on a Wisdom saving throw (DC equal to 8 + your proficiency bonus + your Strength modifier) or be provoked by you until the end of your next turn.

• A provoked creature has advantage on attack rolls while the source of its fury is within line of sight.
• The creature must spend its turn trying to move as close to you as it can. For its action, it can use only the Dash action, try to escape from an effect that prevents it from moving, or make an attack against the source of its fury.

Improved Unarmored Defense

Beginning at 14th level, your Strength Modifier is added to your Unarmored Defense calculation.