A Plague Tale Requiem Secret Armor - Bracer

To unlock the secret armor in A Plague Tale Requiem, you need to solve the windmill puzzle in Chapter 9. This can be done by turning off windmills I and II and turning windmills III and IV on. As soon as you do this, hear the movement of the earth under you. Go down into the cave behind the windmills and take the bracer.

Secret Bracer is a great bonus, especially in the later stages of the game, where you have to fight more often and fight off huge enemy waves. It will allow Amicia to recover faster from attacks, allowing her to run away or prepare to fire her weapon.