Path of the Brawler

These barbarians have spent years training to take a give hits in one of the most brutal types of combat, hand-to-hand

Payback

When an enemy makes a melee attack against you, you may spend your reaction to make a unarmed melee attack against that creature. 

Brawler's Weapons

As a brawler you have surpassed the need for weapons. Your fists function as weapons doing 1d8+STR bludgeoning damage. You may spend your bonus action to strike with your other fist doing 1d8+STR bludgeoning damage. 

Empowered strikes

You have extensive training in hand-to-hand combat and have learned how to deal devastating blows to the strongest of materials. Your unarmed strikes count as magical for the purpose of overcoming resistances.

Brutal will

At 10th level you learn to turn the momentum of a strike against you into power you may use yourself. If you have been damaged since your last turn you may add 1d8+CON to your next strike.

Unescapable Force

At 14th level you have become an unescapable presence on the battlefield. While you are raging, when an enemy creature attempts to move out of your range you may make a contested strength check to grab the target. If the target losses they are grappled by you and take 2d8+STR bludgeoning damage as you wrench them backwards and crush them against you. If the target wins the creature takes half damage and loses up to 15ft of movement speed. This does not cost your reaction to use. 

You can use this feature equal to your 5+STR with a minimum of 5 uses. These refresh on a short rest.