Path of the tank

This subclass takes a Barbarian and makes them more of a front line tank. 

Heavy Weapon Expert

Starting at 3rd level,  You can wield a two handed weapon with one hand with no penalties. You can also choose to wield two shields and attack with either for 1D6 + your strength modifier in bludgeoning damage.

Vitality

At 3rd level, You gain a Vitality threshold of 4 that makes damage equal to and lower then your threshold not effect you. Your Vitality threshold increases by one at levels 5, 9, 13, and 17. This feature doesn't effect apply to radiant, neurotic, psychic, and other magical damage.

-At level 3, you gain 1 temporary hit point at the start of each of your turns during combat. The limit of this feature is 10 temporary hit points. The amount gained increases by one at levels 5, 9, 13, and 17.

Raging buff

Starting at 6th level, whenever you rage you gain 10 feet to your movement speed and a bonus to your AC equal to your proficiency bonus. 

Titan

At 10th level, you learn to deal damage that would be considered to magical. 

You also gain resistance to all bludgeoning, piercing, and slashing damage even when not raging. 

Unstoppable

At 14th level, you are immune to being stunned and paralyzed.

When your hit points drop below half, at the beginning of your turns you heal your level + your constitution modifier.