Path of the Executioner

Striking fear into the hearts of criminals and lawbreakers alike even those with the strongest of wills find themselves trembling before the raised axe dreading the felling stroke that will being them to the ever after 

Tools of the trade

Upon reaching level 3 You gain proficiency with intimidation of you already have proficiency with intimidation you gain expertise 

Fear the reaper

Upon reaching 3rd level when entering into a rage you let out a menacing aura. each creature you choose within 30 feet must make a wisdom saving throw (DC 8 + your proficiency + your strength modifier) or become frightened of you. at the beginning of the creatures turn it can remake this saving throw to end the condition. if a creature was hit by you with a melee wepon attack between its last check it has disadvantage on the saving throw.

Strike the weak

Upon reaching level 3 When you hit a creature with a melee weapon attack if you had advantage on the attack or the creature is frightened you deal an additional 1d4 of the weapons damage type this damage increases to a d6 at 11th and a d8 at 17th 

Master of fear and death

Upon reaching level 6 you become immune to being Frightened and creatures have disadvantage to resist being Frightened by you 

Execute

Upon reaching level 10 when you hit a creature with a melee weapon attack if the creatures hit points are below your barbarian level + your strength modifier the creature must make a dexterity saving throw (DC 8 + your proficiency + your strength modifier) or be executed the creature has disadvantage if the attack is a critical hit if the creature fails the saving throw it is killed instantly whenever you execute a creature you gain temporary hit points equal to your barbarian level 

Avatar of the gallows

While raging creatures that are frightened of you have a speed of 0 and take psychic damage equal to your barbarian level at the beginning of their turn