Raider

A raider barbarian is a barbarian who excels at praying on groups of weak enemies and ganging up with his fellow warriors to make quick work of anything that stands in your path. they can turn the damage they deal into temporary hp, focus on specific areas and frighten stronger enemies to make sure they can focus on what they excel at.

Pillaging zone

At 3rd level you can select an area to focus your attention on. When you start raging you can select a 20 foot radius area and for the duration of your rage you and all friendly creatures get a bonus d4 to the damage they deal to hostile creatures that are inside of the zone.

Health steal

At 6th level you can take health from others in the middle of your raid. If you crit on an enemy that is inside your pillaging zone you can gain temporary hp equal to a quarter of the damage you dealt. 

Strike of fear

At 10th level the sheer power of your strikes intimidates your enemies. When you land a crit while raging you can select an enemy with a cr that’s  at least 3 more than the enemy you just killed and they must succeed a will save or be frightened for two rounds. This increases to 3 at 13th level and 4 at 17th level 

Sweeping attack

At 14th level you can swing your weapon in a large area to hit multiple people at once. While raging you can choose to give yourself disadvantage on an attack and if the attack hits you can make another attack on an enemy within 3 feet of the enemy you just hit. You can only do this once on your turn.