Juggernaut

Many fighters favor elegance and calculating when attacking, but not the Juggernaut. The Juggernauts focus on using their brute strength and will to crush their opponents, and like a living seige engine barely anything can stand in their way, as well as being heavy, tanky combatants that take a beating and get back up. Many look down on them as brutes who throw away all honor in fighting, however few are  brave enough to take them on themselves. 

Bulky

Beginning when you choose this archetype at third level, you gain a +1 bonus to AC while wearing heavy armor.

Your heavy weapon attacks also score a critical hit on a roll of 19 or 20.

Imposing Stature

You have a powerful, commanding presence to your build. Starting at 7th level, you now count as one size larger when determining your carrying capacity and the weight you can push, drag, or lift.

You also gain proficiency in Intimidation. If you are already proficient you double your profieciency bonus for Intimidation checks. Alternatively, you can learn one language and one set of artisan's tools.

War Machine

Your brute strength and raw power are unmatched. Starting at 10th level, you now roll an additional damage die on a critical hit you make using a heavy weapon.

Living Siege Engine

You're heavy and fast like a train, and can wreak just as much havoc as a trebuchet. At 15th level, you can choose to use a bonus action to either push an enemy up to ten feet away from you or knock an enemy prone after a successful attack roll.

The target must make a strength save equal to your strength modifier + 8 + your proficiency bonus.

Indestructable

At 18th level, your willpower and sheer pain tolerance allow you to temporarily push past your physical boundaries, granting you the ability to survive being killed until the end of your next turn, if magical healing is used to heal you to a point where you would no longer be dead, you stay living. All successful attacks made on you until the end of your next turn result in one immediate failed death save.

You can use this feature once per long rest.