From publisher blurb:
The Way of Blue Metal fighter archetype is a versatile subclass that uses chakra points to perform features they choose from a list at set levels.
Within the divided world of Somnus Domina, a divided school of swordsmanship emerged. A lone elven swordsman turned inward, finding peace and harnessing his mental energy to utilize in his swordsmanship. Eventually he would infuse his sword with his own pure spiritual energy, and the result turned the blade blue... so was born the way of blue metal.
Those who follow the way of blue metal use chakra to unlock supernatural abilities within themselves. They study teachings passed down from their forebearers and sharpen their mind to accomplish techniques similar to those a monk may perform. Using this energy they can find weaknesses in enemy armor, swiftly weave through enemies, strike from afar with their blade and achieve bursts of heightened activity.