Released on , ULTRAKILL - Patch 15 (officially titled "The FULL ARSENAL Update" ) delivered the final set of standard weapon variations, a new secret level, and the brutal "Brutal" difficulty setting. This major update completed the primary weapon roster, giving players access to every main variation intended for the game's final release. New Weapons and Variations
The secret level is a love letter (and a hate crime) to Devil May Cry 2 . Players control a with no arms, no sliding, and only the default revolver. The goal? Survive three waves of Virtues and Malicious Faces in a completely flat, 2D side-scrolling corridor. Completion unlocks the "Infinite Retribution" skin for the Marksman Revolver—a shiny red chrome finish.
Adding the long-awaited final two levels of (7-3 and 7-4) and the secret level 7-S, this patch pushes the game's signature blend of Devil May Cry combos, Quake movement, and existential dread into new, horrifying territory.
Found in a secret sarcophagus behind 7-4’s second arena (use the Whiplash to break a specific unmarked stained glass window), the Tetherwhip is a high-risk, high-reward device. Functionally, it works like a grappling hook, but with a ULTRAKILL twist.