These Warriors were blessed, or cursed, by some form of Werebeast. They take an embrace to these enhancements and use them to their own benefits.  

Enhanced Senses

When you choose this archetype at 3rd level, you gain proficiency in Survival. Your enhanced Hearing and smell gives you an additional edge when entering combat.

While in your Hybrid Form your Natural Strikes can use Dexterity instead of strength. Your Natural Strikes count as a light for the use of abilities. ie Sneak Attack

Pack Instincts

While you have an ally within 5 feet of enemy as a bonus action, you can give yourself advantage on weapon attack rolls until the end of the current turn and give your ally Temporary Hit Points. Temporary Hit points equal to half your Fighter level + 1D10.

You can use this feature a number of times equal to your Proficency bonus, and you regain all expended uses of it when you finish a long rest.

Tireless Hunter

Starting at 7th level, your strength and agility allow you to excel in tracking. Whenever you make a Wisdom (Survival) check, you gain a bonus to the check equal to your Dexterity modifier.

You Walking speed is increased by 10 feet if you are wearing medium or light armor. 

You knowledge of hunting and survival also causes you to gain proficiency in Wisdom saving throws. If you already have this proficiency, you instead gain proficiency in Intelligence or Charisma saving throws (your choice).

Pact Tactics

You have advantage on melee attack rolls against another creature if at least one your allies are within 5 feet of the target creature and the ally isn't incapacitated.

Your Pact Instincts Temporary Hit points can be given to an ally within 20 fight. The Temporary Hit points now equal Fighter level + 1D10

Your Natural Strikes now do 1D8 Damage.

Hunters Fury

Starting at 15th level, you learn to trade accuracy for swift strikes. If you take the Attack action on your turn and have advantage on an attack roll against one of the targets, you can forgo the advantage for that roll to make an additional weapon attack against that target, as part of the same action. You can do so no more than once per turn.

Apex Predator

Starting at 18th level, your beastial fury lashes out at your enemies. Once per turn, you learn how to hit the most vital spots on any creature. You can deal Max damage on an attack roll, ignoring any resistances. Your Natural Strikes now do 1D10 damage.