Pugilist rework

Fighter subclass to imitate strength based brawlers

Bonus Proficiency

When you choose this archetype at 3rd level, you gain proficiency in one of the following skills of your choice: History, Insight, Performance, or Persuasion.You learn one language of your choice.

Unarmed Combatant

 

Starting at third level your unarmed attacks increase increased to 1d6. This improves as you gain levels in this class. 1d8 at level 5,  1d10 at level 11, and 1d12 at level 17. Additionally when you make an unarmed attack on your turn, you may attempt to grapple or shove an enemy as a bonus action. 

Hard Knocks

Starting when you get this feature, your unarmed attacks count as magical for the purpose of overcoming resistances. Additionally, you gain a bonus to Strength (Athlatics) checks equal to your unarmed combatant die.

Ground work

Starting at 10th level, you count as one size larger for the purpose of grappling and creatures that stand from a prone condition in your reach provoke an opportunity attack. Additionally, creatures with multiple legs gain no advantage when making Strength (athletics) or dexterity (acrobatics) to avoid your grapple or shove attempts. Lastly, when attacking prone targets you score a critical hit on a roll of 19 as well as 20.

Juggernaut

Starting at 15th level, whenever you hit a creature two or more times in the same round that creature must succeed on a saving throw equal to 8+your proficiency bonus+your strength modifier or fall prone.

Calloused

Starting at 18th level, you've taken enough hits that you've learned to roll with the punches. Whenever you take damage you take that damage minus your con modifier. Lastly, you get a bonus to all saving throws equal to your con modifier.