How to get the secret Isu Bow, Nodens' Arc, in Assassin's Creed Valhalla.Later in the month, the official method for accessing the Isu Bow was discovered by Access the Animus on YouTube - a mystery which involves uncovering clues outside of the game itself to work out the bow's location and method of retrieval. One of these is a secret Isu Bow, named Nodens' Arc, which was discovered by JorRaptor on YouTube in January 2020 through a glitch, which at the time of writing, is still accessible. Several months after release, Assassin's Creed Valhalla is hiding secrets players are still uncovering.