In Octopath Traveler 2 there is a multitude of different classes shared between the many characters. Alongside class guilds to unlock multiple licenses for class usage. On top of these normal classes are advanced classes that are hidden throughout the world. One you can get early in the game, another late in the game, and the other two after finishing the final character story chapters. Here are there locations and how to unlock them for your party.
All Advanced Class Locations in Octopath Traveler 2
For starters is the Inventor class. You can get this very early in the game after you finish Throné’s first chapter. Simply follow the checkered shield icon on your mini-map and you can unlock it with a few helpful attacks.
When you have to go to Gravell during Osvald or Temeno’s final chapters.
You will stumble upon this building. Simply knock out the person guarding the door and talk to the man inside to unlock the Warmaster class.
I would recommend getting these next two classes after you finish all character stories so you are appropriately leveled to get them. The first is the Arcanist class, which requires you to defeat a high leveled slime boss in the ocean.
Afterward, go all the way to the right to this island and follow the maze to the end.
Make sure you grab every chest, then interact with the slab at the very end. Once you do this, go back to the beginning and after interacting with the slab. Find the invisible bridge to the upper left here.
For the final advanced class. The Conjurer, go to Ku after finishing Hikari’s story. Go to this tower and undertake the multiple floors of challenges within. This will be a challenge so do not take chances with your builds.
Some advanced classes, like the Inventor and Warmaster require certain items and equipment to unlock all of their abilities. You can find guides to the items for the Inventor here. As well as a guide for the weapons for the Warmaster here.