Path of the Berserker (DI)

For some barbarians, rage is a means to an end—that end being violence. The Path of the Berserker is a path of untrammeled fury, slick with blood. As you enter the berserker’s rage, you thrill in the chaos of battle.

Frenzy

Starting when you choose this path at 3rd level, you can go into a frenzy in battle. If you use Reckless Attack while your Rage is active, you deal extra damage to the first target you hit on your turn with a Strength-based attack. To determine the extra damage, roll a number of
d6s equal to your Rage Damage bonus, and add them together. The damage has the same type as the weapon or Unarmed Strike used for the attack. 

Mindless Rage

Beginning at 6th level, you have immunity to the charmed or frightened condition while raging. If you are charmed or frightened when you enter your rage, the effect ends.

Retaliation

Starting at 10th level, when you take damage from a creature that is within 5 feet of you, you can use your reaction to make a melee attack against that creature.

Intimidating Presence

Beginning at 14th level, As an action, you can strike terror into others with your menacing presence, as you swell with primal power. When you do so, each creature of your choice within 30 feet of you—or 60 feet of you if your Rage is active—must make a Wisdom saving throw (DC equal to 8 + your proficiency bonus + your Strength modifier), provided the creature isn’t behind Total Cover. On a failed save, a creature has the Frightened condition for 1 minute. At the end of each of the Frightened creature’s turns, the creature repeats the saving throw, ending the effect on itself on a successful save.

Once you use this feature, you can’t use it again until you finish a Long Rest. If you’ve run out of uses of this feature, you can expend a use of your Rage, choosing not to activate the Rage and activating Intimidating Presence instead.