Path of the Breaker

A barbarian subclass that excels at unarmed combat. Steel is no match for the rage and honed body of one dubbed Breaker. Destroy opposition barehanded. 

Sledgehammer Blows

When raging and making an unarmed attack, you can add the raging bonus damage as long the attack was made with the strength modifier. Your unarmed attack is 1d6+strength, increased to 1d8 at class level 4, 1d10 at class level 8, 1d12 at class level 12. If not already, unarmed strikes become compatible with the extra attack feature. For all intents and purposes, your unarmed strikes count as weapon attacks. 

Staggering strike

Your attacks are destructive and disruptive. Once per turn when making a reckless attack, you can attempt to throw an enemy off balance. The enemy must succeed on a saving throw equal to 8 + your proficiency modifier + STR modifier, or have one of the following, chosen by the player, imposed on them until the end of your next turn:
-2 to ac
cannot make reactions
disadvantage on dexterity and strength saving throws

 

Thick Skin

Years of throwing your body at problems have hardened beyond normal limits. Rage gives you resistance to fire, cold, and force damage in addition to it's standard benefits. 

Sundering fists

Your attacks carry such power they can break through steel. When raging, you may take the Sundering Strike action. Expend a charge of rage and make a standard attack roll. On a hit, you do 2d12  bludgeoning damage. If the target is wearing non-magical armor, you reduce it's durability to 0 (they no longer gain it's benefits). If the target is wearing magical armor, you may remove it. If the target has natural armor, you may permanently lower their ac by 2 (no lower than 4 less than it's original ac) as you damage their hide and body. This feature can also be used to damage objects as strong as steel. You can destroy non magical weapons and armor, and break through walls 6 inch or less made of steel or weaker. Don't know if you can break it? Ask the dm.