You’ll find a total of 16 Old Protector items scattered throughout the various rooms in the sanctuary.
The windmill puzzle is one of the many puzzles in A Plague Tale: Requiem, and this one rewards the secret Bracer armor.
In order to open the barred gate in Chapter 11, you will need to solve a puzzle along with the help of Hugo and Sofia.
Sulphur is an important resource you need to craft an igniter, and you can find this in a chest in Chapter 2.
