There's an out of reach ladder at the Altar of Reflection near the Stone Spire Hideout in Ghost of Yotei, but there is a simple trick to it.
The deluxe edition of Ghost of Yotei includes three Traveler's Maps, but players will need to place them before they can use them.
Upgrading Atsu's skills is the only quick way to slay Saito's men, thus find out how to upgrade Atsu's techniques in Ghost of ...