The Martial Master (PF2E)

From publisher blurb:

In this book you will get a full 1-20 class that is conceptually a hybrid class of the monk, barbarian and swashbuckler classes from 1st edition. While you will see elements of each of the "parent" classes, they are introduced in a fresh way that brings a new way to approach martial combat. In addition to the base class you will get a slew of class feats to tailor your fighting style to your character. All-in-all the martial master will provide an excellent class for those players seeking a new, more measured and interesting martial class or for GMs to provide a challenging combatant.