Path of the Blood Butcher

There have been many Barbarian paths. Paths that new barbarians must travel down to unravel their true potential as the ultimate killing machines. Some call upon their ancestors, storms even, to reach their full potential. But nothing is more powerful in a barbarian, than the unrelenting spirit of rage that battles endlessly until the last beat of the heart. 

Savage Brute

Starting at 3rd level, you are immune to fear and can't be frightened. 
Additionally, when making a melee weapon attack, you can use a bonus action to attack them with an unarmed strike. 

Blood Cry

At 6th level, when raging, if you kill a creature or make it bleed (drop below half hp) you can smear it's blood over yourself, letting out a frightful war scream, instantly horrifying any creature that sees you. All enemy creatures within 15 feet that can see you, have disadvantage on all attacks made against you and melee attacks made against affected creatures, you can add a d4 for the attack and damage (at 14th lvl, it becomes a d6). You can use this feature a number of times equal to half your STR mod rounded up per long rest. 

Healing Death

At 10th level, if you kill an enemy, you can lick their blood off your weapon, recovering hit points. Hit points recovered = creatures size + STR mod + Proficiency bonus

Tiny=1
Small=3
Medium=5
Large=7
Huge=9
Gargantuan=12

Gore

At 14th level, your rage determines whether a creature lives or dies. With this feature, you can automatically critically hit a creature of your choice. You can use this feature a number of times equal to half your STR mod, rounded up (minimum of once) per long rest. 

Absolute Carnage

At 14th level, when determining the damage of your weapon attacks, you can double your strength mod that is used for the damage. You can use this feature a number of times equal to half your STR mod rounded up (minimum of once) per long rest.