Path of the Doomslayer

Since the dawn of time, the Eternal War has plagued the material plane. Tearing through everything and turning lush wilds to ash, the devils and demons' unending conflict has destroyed cities, nations, families, and lives. The survivors and their descendants can be found wandering the wastelands that remain in their wake, consumed by unending rage. To them, to live is to take back what was lost, to destroy the destroyers, and to commit unending acts of bloodshed upon the scourge of the Hells.

Hellwalker

Beginning when you choose this Primal Path at 3rd level, your base movement speed becomes 40 ft while raging and you may choose to ignore the effects of difficult terrain.

In addition, you may spend time during a short or long rest to imprint weapons with runes. Weapons you imprint can be stored in and summoned from a personal nether void at will, so long as the weapon is in your hand or your hand is free to summon it, respectively. You may do this to a number of weapons equal to your proficiency modifier, and can remove a rune from a weapon in your hand at will.

Flesh & Metal

At 6th level, the barbarian adds an additional point of damage to each attack for every damage type previously inflicted on a foe while raging. This damage, as well as your rage bonus damage, cannot be mitigated by resistance. This effect lasts the duration of the rage.

Rip & Tear

At 10th level, the barbarian gains temporary hit points equal to their constitution score each time they make a killing blow with a melee weapon attack.

Harbinger

Only the dead may know peace from the Doomslayer. Those who stand against them meet death swiftly. The first time a unique damage type is inflicted on an enemy while raging, all damage die for that roll are doubled. In addition, any 1s or 2s rolled for a previously inflicted damage type may be rerolled for the duration of the rage. This effect lasts the duration of the rage.