Path of the Mountain

The Path of the Mountain drives the barbarians who follow it to fight even harder against foes much larger than them. The warrior who follows this path is stalwart and unmoving. Size difference is no object, for in his mind, the warrior is as tall as a mountain.

Unyielding

At level 3, your stauch determination makes you very hard to keep down. Your hit point maximum increases by 1 everytime you gain a level in this class. In addition, you have advantage on Strength-based checks to resist being moved against your will.

The Bigger They Are...

Beginning at 3rd level, while you rage, you can muster more strength behind your hits when faced with a foe bigger than yourself. When you are raging and you’re fighting a creature of size large or bigger, you can double the rage damage bonus for your melee weapon attacks.

...The Harder They Fall.

At level 6, your attacks have staggering effect them that hinder the monsters you fight. If you hit a Large or bigger creature with your attacks, it must pass a Strength saving throw (8 + proficiency modifier + Strength modifier) or have its moving, climbing and swimming speed reduced by half until the end of your next turn. If the creature has a flying speed, it cannot take off.

Stone-Cold

Beginning at level 10, you become totally unaffected by the presence of your foes. They have no grasp on your mind. You become immune to the frightened and have advantage on checks to resist the charmed conditions.

Hit’em Where It Hurts

At level 14, your experience fighting monsters much larger than you has giving you this necessary insight to know how to make the most of every hit. When you hit a Large or bigger creature while raging, you can expand a use of your rage to add 2d6 damage to your hit. 

At level 20, you add 2d6 to every hit against Large or bigger creatures while you are raging.