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
: Don't make every room an arena; include hallways, environmental storytelling, or scenery breaks to prevent burnout. ULTRAKILL -Patch 15-
The "Full Arsenal" moniker refers to the addition of the red variations for the final three weapon categories: Released on , ULTRAKILL - Patch 15 (officially
is ULTRAKILL at its most confident and cruel. It respects your skill, then tells you that respect was misplaced. With one layer left to go before the final game (Patch 16: Fraud and Patch 17: Treachery), Hakita has proven that Hell is not a place—it’s a combo counter that never stops climbing. The "Full Arsenal" moniker refers to the addition
: Avoid "stupidly large" arenas that force the player to spend too much time just closing the distance. Keep encounters tight and readable.
Idols now provide style points when destroyed, and enemy projectiles are cleared between waves to prevent unfair damage during wave transitions.