Ubisoft Montreal has released the full patch notes for Assassin's Creed Valhalla Title Update 1.5.1, which is now live in the game. The update adds more playable content to Valhalla and makes a ton of bug fixes and quality of life improvements.

Notably, Title Update 1.5.1 adds a new pack of Mastery Challenges, introducing three more shrines that will test your melee combat, ranged combat, and stealth combat skills. You'll have to complete the narrative tied to Mastery Challenge Pack 1 in order to access these new challenges.

Title Update 1.5.1 also adds support for the Ostara Festival, Valhalla's annual celebration of the Spring Equinox. Kicking off April 21, the limited-time event will continue to May 12. Participating in the festival sees Eivor needing to complete various activities--doing so nets you brand-new weapons, which can only be unlocked during the event.