Assassin's Creed Shadows has released patch 1.0.6, which addresses player concerns by fixing a bug with the Onryo Mask visibility, resolving issues with missing Mastery Points, and correcting the "Temple Stories" quest progress display. The patch introduces a new Nightmare difficulty level that requires perfect parries to avoid damage, and includes a sponsored one-shot quest that allows players to unlock a new ally, as well as themed weapons and a Critical Role banner for hideouts. The patch goes live today at 2 pm UTC / 10 am EDT / 7 am PT.