Strength Fortified
At level 1, you gain the Armament Attunement and can use your Intelligence Modifier in place of Strength for Brawl Techniques and Haki Infused attacks.
Barrier Breaking
Starting at level 3, when you make a Haki Infused attack or upcast a Technique using the Haki Upcast section that requires an attack roll, you may choose one of the following effects if the attack successfully hits:
Your attack gains bonus damage equal to your Brawl Modifier.
You can apply one Rank of Bruised to the enemy.
You can ignore DR equal to your Haki Master level that the enemy has on this attack.
On A Roll
When you get on a roll with Armament Haki you're nearly impossible to stop. At level 6, each turn you successfully hit an enemy with a Haki Infused attack or Armament Haki Upcast Technique that requires an attack roll adds an Assault Counter to a maximum of four. You lose a Counter when you would miss with a Haki Infused attack, or if you do not attack an enemy with Armament Haki on your turn, unless you are incapacitated. On your turn, you may spend 2 energy per attack and a Bonus Action to make a number of Unarmed or Weapon attacks equal to your Assault Counters.
Lethal Haki
At level 10, your Haki can easily knock out even the toughest of opponents. Your Armament Haki Attacks gain +2 to their Crit Range. When you Crit with a Haki Infused attack or Armament Haki Upcast Technique you may spend 1 Assault Counter to add an additional damage die to the attack or technique (this damage die would be doubled due to the critical).
Unyielding Assault
At level 13, your relentless attacks make you a formidable opponent. When you have at least one Assault Counter, you gain resistance to bludgeoning, piercing, and slashing damage. Additionally, when you spend Assault Counters to make extra attacks, those attacks can also benefit from any bonus damage effects from Barrier Breaking.
Internal Destruction
Upon reaching level 17, you've reached the peak of Offensive Armament Haki, Internal Destruction. Once per Short Rest, you can spend 3 Assault Counters when you successfully hit with a Haki infused attack or Technique that deals damage. When you do, the target must make a Constitution Saving Throw Versus your Technique DC. On a failed save, they take double damage from the attack; on a success, the attack deals 2 additional damage dice.
Unstoppable Force
At level 20, your mastery of Armament Haki allows you to break through any defense. When you use Barrier Breaking, you can choose to ignore all DR and resistance the target has for that attack. Additionally, once per long rest, you can unleash an overwhelming barrage of Haki Infused attacks. For one minute, you can make an additional Haki Infused attack or Armament Haki Upcast Technique as part of your Attack action. This effect can only be activated as a Bonus Action.