Path of Carnage

Path of Carnage:
requires the use of two-handed weapons or their own hands
when attacking enemies while enraged the Carnage begins to set in. Any Enemy in front of the Barbarian will see that the Barbarian begins to physically change as their eyes become blood shot, a feeling of dread presses against them as the Barbarian is unable to hide their own blood lust and watching the barbarian charges in slaughtering anyone in their path.

 

Bloody Edge

Barbarian Level 3
At third level, you gain a distaste for most weapons, preferring heavy weapons and unarmed strikes. that can cleave any foe they sets his eyes on. When you make an attack, your weapon begins to grows heavier and runes begin to appear on the weapon or fist, when a attack lands against the enemy, a critical will give a additional You gain a stack of Grievous, that can be spent in the following ways (announced before your attack)

1 hit = 1 Grievous stack

1 crit = 2 Grievous stacks

Using 5 Grievous stacks = will give them a 100% crit on their first attack that connects

 Using 10 Grievous stacks = all damage done by the Barbarian will now heal it by half the total done against one target and will last for two turns

Maim, and Cleave

Barbarian Level 6
You gain the ability to sweep your heavy weapon across hordes of enemies, Cleaving into enemy bone, and creating powerful vibrations in their bodies from the impact. You can use your bonus action to empower your attacks into one hard strike; you can only make one attack this turn, but for every attack expended, your singular attack roll deals one additional damage of dice. In addition while using this attack, you may expend 5 Grievous charges to ignore resistance to damage from the attack.

Unstoppable

Level 10 Barbarian 
You have the tenacity to resist being knocked out when a foe may think you down and out; if you are knocked to zero hit points, but not killed outright, and you are not incapacitated, you can use your reaction to expend all of your stacks of Grievous. For every stack expended, you heal for 1d6 points. Once you use this ability, you must take a short or long rest before you can use it again

Kill First Ask Never

Barbarian Level 14
You relish in the fight, enjoying bathing in the blood of your enemies, and you grow exited when they survive your blows. Your attacks take on a new kind of lethality as you enter a dangerous state; before you take the attack action on a turn, as a bonus action you can expend all of your Grevious stacks. For each stack you expend, you either gain an additional 1d6 to your damage rolls or attack rolls (but not both, only one at a time can be active). This state ends at the end of your third turn after using the ability.