Slayer

There's one thing that pushes a slayer forward. Blood. They relish in the mangled corpses of their enemies, using the gore and chaos to intimidate their opponents and fuel their own desires. 

Bonus Proficiency

When you choose this archetype at 3rd level, you gain proficiency in intimidation, if you do not have it already. 

Glory Kill

At 3rd level, you have become obsessed with killing your opponents in the most vicious fashion possible. After killing a creature, you can expend one use of this ability to finish them in a gory fashion. By doing this, you gain 1d10 + your fighter level in temporary hit points, furthermore, you and any creatures friendly towards you have advantage on attacks against any creature who say your display until the end of your next turn. You can do this 4 times per long rest. 

Blood Strike

At 7th level, you have become more adept at fighting multiple opponents. After performing Glory Kill, after making an attack, you can choose to add the damage dealt to any and all creatures within 5 ft of the initial target. This can only be done within 5 turns after the Glory Kill and can only be done once per Glory Kill. 

The Only Thing They Fear

At 10th level, your mere presence on the battlefield is enough to intimidate your opponents. For the first 2 rounds of combat, any creature within 15 feet of you has disadvantage on wisdom and charisma checks and saves. This does not effect friendly creatures. 

Until it is Done

At 15th level, your tireless lust for blood now knows no restraints. When you roll initiative and have no uses of Glory Kill remaining, you regain two uses.

Hell on Earth

At 18th level, your unending rampage has become unstoppable and terrifying to all who observe. After performing a Glory Kill, all creatures who see your display must make a wisdom saving throw equal to 8 + your STR modifier + your proficiency bonus or become frightened of you for 3 rounds. They can repeat the save at the end of each of their turns. This does not effect friendly creatures.