In Assassin's Creed Valhalla: Wrath of the Druids, you can get abilities that grant you additional skills. This way, you won't have to rely only on the attacks you unlocked in the skill tree. On this page, you will learn the locations of Books of Knowledge in Meath.
The Vikingr Salute ability can be found west from Kells Abbey camp.
To get to the skill, you must enter the locked room. You must first shoot through the bars with your bow, right at the lock of the door. This will open the door.
You can use this ability to kill enemies in battle.