Path of Silent Terror

Most Barbarians go into battle loud, angry, and full of furry. Shouting out warcries and marching into the fray with a Great-Axe held high. But those who follow the Path of Silent Terror have a different approach. They make no sound, now shouts or grunts, no battle cries let out their anger. The sit-in silence, letting their rage build and build to such a degree that it pours out of their bodies, giving them an aura so menacing its best not to stand too close. Unless you want to be filled to the brim with terror.

Frightening Aura

Starting at 3rd level, whenever an enemy enters a 5 feet radius centered on you while you're raging, they must succeed a Wisdom saving throw or become frightened of you. The DC to the saving throw is 8 + your proficiency bonus + your Constitution modifier.  The radius of the aura increase to 10 feet at 6th level, 15 feet at 10th level, and 20 feet at 14th level.

Frightening Furry

Once on your turn, when you hit an enemy that's frightened of you, you can deal extra psychic damage equal to 1d6 + half your Barbarian level. 

Dreadful Glare

After defeating an enemy you can use your reaction to look at another enemy within 60 feet of you and force them to make a Wisdom saving throw. If the fail the saving throw they gain the Frightened condition.

Carnage

When rolling to hit against a target that is frightened by you both a 19 and 20 count as a critical hit.

Manic Fear

While you're raging, you can cast the Confusion spell without any components or concentration. Any creature frighted by you has a disadvantage on the saving throw. You can use this feature a number of times equal your constitution modifier.