(Patch 15d) is a focused stability and polish update released on May 13, 2024, shortly after the massive Full Arsenal Update . While it does not introduce new layers, it provides essential bug fixes that refine the experimental mechanics and new weapons added in Act III. Key Technical Refinements
On a technical level, builds in the 14-million range represent the transition to newer Unity engine patches that Hakita utilized to fix the dreaded "physics jitter." ULTRAKILL Build 14344626
Build 14344626 is peak mechanical density. Every weapon has at least three hidden techniques (projectile boosting, coin punching, slam storage). The skill ceiling is not visible from the ground. ULTRAKILL Build 14344626 (Patch 15d) is a focused
: A flick of the Marksman revolver. The bullet struck the gold mid-spin, split, and shattered the skulls of two Soldiers before they could pull their triggers. Every weapon has at least three hidden techniques
This build addressed specific bugs introduced or remaining after the release of the "Full Arsenal" update: Weapon Refinements Sawed-On Shotgun
Detailed changelogs for this specific build are available via the SteamDB Patch 15d notes . Patch 15d Changelog · ULTRAKILL update for 13 May 2024