Use brutal strikes to cripple your opponents.

Rupturing Fist Technique

Starting when you choose this tradition at 3rd level, you have learned to use the sheer force of your blows to seriously injure others. Whenever you hit a creature with all of the attacks granted by your Flurry of Blows and all the attacks granted by the Attack action,  you can impose one of the following effects on that target:

• It must succeed on a Constitution saving throw or begin to bleed internally, take 1d4 necrotic damage on the start of each of it's turns. It can repeat the save each turn, ending the effect on a success. While bleeding, the target only heals half as much as it normally would from spells, class features, and magical items/potions.
• It must make a Strength saving throw. If it fails, until the end of its next turn it has disadvantage on attacks it makes, and attacks against it have advantage.

Resilient Soul

At 6th level, you learn how to use ki to bolster your physical form . As an action, you can spend ki points gain temporary hit points equal to 2d10 + your proficiency modifier for each ki point up to a number of ki points equal to your proficiency modifier. 

Brutalize

Beginning at 11th level, you have learned to cripple the spirits of your opponents through mangling their corpses. When you kill a creature with an unarmed strike or monk weapon, you can use your bonus action to desecrate and mangle their corpse. They automatically fail 2 death saves (if they can make death saves), and each creature of your choice that can see you must make a constitution or wisdom saving throw (their choice) or be stunned on a failure. At the end of each of their turns they can repeat the save, ending the effect on a success. A creature immune to being frightened makes these saves with advantage.

 

Strikes of the Harbinger

At 17th level, your most well placed strikes are exceptionally lethal. When you roll a critical hit on a melee attack, the target also gains 1d4 levels of exhaustion. If the strike would knock them unconscious, they immediately need to make a death save. Failing this death save counts as a critical failure.