: The ultimate challenge. You must unlock and P-Rank the Prime Sanctums ( P-1: Soul Survivor and P-2: Wait of the World ) by defeating Minos Prime and Sisyphus Prime. Why Chase the 100%?
In ULTRAKILL, "100%" goes beyond just reaching the credits. It requires completing every challenge the game currently offers across all available Layers (Prelude through Violence). ultrakill 100 save