Path of The Bloodserker

I have taken inspiration from classes like blood hunter and made it a brute force version that focuses targets with a greater bonus but attacking anyone else give you a slight nerf. I have also taken inspiration from fighter and things like second wind where you regain health. I’ve also made base parts of the barbarian slightly stronger at a higher level like brutal critical.

blood rage

Whenever you drop below half hp Regain one half of your LOST health along with blood rage whenever hitting another monster and the attack connects you can make a second attack for a bonus action. In exchange the enemy gains advantage on his next attack

Bloody Tendencies

You can feel the adrenaline rushing through your veins, whenever you kill a creature, you can gain half of the damage you delt in temporary hit points.

Otherworldly Bloodlust

Your Bloodlust can be compared to a starved vampire and know when to target one person. When you lock on to an enemy you have advantage on attacking that enemy naturally.  However, you have trouble targeting others with a minus five to attack rolls on others. You can target an enemy at the start of rage and when you kill your target. 

Eyes for Weakness

You know when your target shows weakness when you hit level fourteen you critically hit your specified target with an eighteen, nineteen, or twenty.