There are a total of 15 Criptograma Chests and 30 Criptograma Charts in Far Cry 6. Criptograma Chests get marked on the map as you get near it. To open a Criptograma Chest you will need to find 2 Criptograma Charts nearby, which act as keys to open the chest. On opening the chest you will find a Piece of Armor.
You will find blue markings pointing towards the charts. There is also a wind chime near the chest and charts. You can follow the noise of the wind chime to locate them. This article shows the location of Criptograma Chest & Criptograma Charts in the Armonia area of the Isla Santuario region.
Isla Santuario Criptograma Chest 1/1 and Criptograma Charts #1 & #6
Criptograma Chest in the Isla Santuaario region is in a small house northwest of Armonia as shown in the picture below.
Criptograma Chart #1 is inside a big pipe at the back of the house as shown below.
Criptograma Chart #6 is on the roof of the house as shown below.
