Bruiser

Bruisers are battlefield legends, able to withstand countless assaults and dish out brutal beatings.
Never knowing when to give up, they face every fight head on, being able to stay standing when only few could do so.

Heroic Recovery

Starting at 3rd level, whenever you would have to make a Death saving throw, you can instead choose to use your Second Wind feature as if you had spent a Bonus Action to do so.
You cannot use your Bonus Action the turn you use this feature.

Bulwark Stance

Also at 3rd level, you can use your Bonus Action to assume a Defensive Stance. Doing so gives you a +1 bonus to AC, Strenght saving throws and Strenght checks to resist being grappled, but reduces your movement speed by 10 feet. Those changes last until the begining of your next turn. You can use this feature a number of times equal to 1 + your Constitution modifier and regain all expended uses on a Long Rest. At 10th level, these bonuses increase to +2

Hard Headed

Starting at 7th level, Strenght (Athletics) check, you gain a bonus to the check equal to your Constitution modifier.
You also gain proficiency in Wisdom saving throws. If you already have this proficiency, you instead gain proficiency in Intelligence saving throws
or Charisma saving throws (your choice).

Exceptional Health

Starting at 10th level, you gain an additional use of Second Wind and you become immune to diseases and poisons.

Legendary Opposition

Starting at 15th level, whenever you use your Indomitable feature to reroll a saving throw other than a Death saving throw, you can choose to succeed on your save instead.
When you do so, you gain advantage on the next Attack roll, Ability check or Saving throw you make before the End of your next turn.

Vigorous Rampage

Starting at 18th level, you may add your Constitution modifier in addition to your Strenght modifier to the attack and damage rolls of Melee and Throwing Attacks.
Also if you use your Action Surge for the Attack action, the first Hit you have that is not a Critical Hit, becomes a Critical Hit regardless of the roll result.