Path of the Doom Slayer

In the first age, in the first battle, when the shadows first lengthened, one stood burned by the embers of Armageddon, his soul blistered by the fires of Hell and tainted beyond ascension, he chose the path of perpetual torment. In his ravenous hatred he found no peace; and with boiling blood he scoured the Umbral Plains seeking vengeance against the dark lords who had wronged him. He wore the crown of the Night Sentinels, and those that tasted the bite of his sword named him, the Doom Slayer.

Armored Destroyer

Starting at 3rd level, you gain proficiency in heavy armor and firearms and you still gain benefits of rage, even if you are wearing heavy armor.
Additionally, anytime you score a critical hit on a creature while raging, they are stunned until the end of your next turn.

Forged in Hell

Beginning at 6th level, you cannot be charmed or frightened while raging. If you are charmed or frightened when you enter your rage, the effect is suspended for the duration of your rage.

Rip and Tear

Starting at 10th level, if you are within five feet of a stunned or paralyzed creature, you can use a bonus action to brutalize them, dealing three times your barbarian level in bludgeoning damage to the creature. This damage cannot be reduced in any way.

Empowered Rage

Beginning at 14th level, whenever you enter into your rage, you can choose to gain one of the following benefits until your rage ends.

• You treat any roll on a damage dice of 3 or lower as a 4.
• You gain resistance to all damage type except psychic
• Your speed is increased by 20 feet and your jump distance is tripled
• Your unarmed strikes count as magical weapons and deal an extra d10 bludgeoning damage. You can also make 3 attacks when you take the attack action if all three attacks are unarmed.