# ULTRAKILL Patch 17d4 Changelog

- Product: ULTRAKILL (https://whatsnew.fyi/product/ultrakill)
- Vendor: Arsi "Hakita" Patala
- Date: 2026-04-25
- Original notes: https://store.steampowered.com/news/app/1229490/view/511863455583568864
- Permalink: https://whatsnew.fyi/product/ultrakill/releases/2026-04-25-patch-17d4-changelog

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **changed** — Sawblades and chainsaws now lose their double damage state after 3 seconds of being punched
- **changed** — Increased the weight of a detached chainsaw from 3 to 5 to reduce the amount of them that can be supported by a single magnet
- **fixed** — Wave progression to spawn a Mirror Reaper in the Cyber Grind now ignores Deathcatchers to avoid a rare softlock
- **changed** — 10% of a Cyber Grind wave's points will now always be reserved for common enemies to avoid waves being entirely taken up by Special and Uncommon rank enemies
- **changed** — Gave Providences a global cooldown system separate from Virtues, to force them to attack in turns without disrupting Virtue attacks
- **added** — Added an additional collider to the 8-2 maintenance door in order to stop players with low FPS from being able to slide through the door
- **fixed** — Fixed conduction sometimes not working when Max Gore Per Room has been set to 0
- **fixed** — Fixed aim assist not working through portals
- **fixed** — Fixed a navmesh issue in the 8-2 Second Deathcatcher arena that caused enemies to sometimes get stuck inside the stairs
- **fixed** — Fixed OOPS Blockers being visible above the entrance door after the player completes the secret 8-2 arena
- **fixed** — Fixed the decorative turrets in 7-2 not functioning properly
- **fixed** — Fixed the blood spray in 7-4's ending not working
- **fixed** — Fixed a bug that caused the music in 1-E to fade out if the player enters the skull room vent early
- **fixed** — Fixed a bug that caused Gabriel to not transition between phases when the Blind Enemies cheat is enabled
- **fixed** — Fixed one of the advanced options for 8-4 being visible before the player has unlocked the level
- **fixed** — Fixed Strays and Soldiers not predicting the player's movement on Brutal difficulty
- **fixed** — Fixed the portal from the secret room's elevator in 8-2 not rendering correctly
- **fixed** — Fixed the ceiling theater effect in 8-2 and 8-3 not working at some camera angles
- **fixed** — Sanding a Cerberus no longer causes their speed to reset to their Standard difficulty speed on Violent and Brutal
- **fixed** — Fixed a Cyber Grind coin issue where coins would no longer reflect non-default beams properly after the player punches a cannonball into the void

-  Sawblades and chainsaws now lose their double damage state after 3 seconds of being punched

-  Increased the weight of a detached chainsaw from 3 to 5 to reduce the amount of them that can be supported by a single magnet

-  Wave progression to spawn a Mirror Reaper in the Cyber Grind now ignores Deathcatchers to avoid a rare softlock

-  10% of a Cyber Grind wave's points will now always be reserved for common enemies to avoid waves being entirely taken up by Special and Uncommon rank enemies

-  Gave Providences a global cooldown system separate from Virtues, to force them to attack in turns without disrupting Virtue attacks

-  Added an additional collider to the 8-2 maintenance door in order to stop players with low FPS from being able to slide through the door

-  Fixed conduction sometimes not working when Max Gore Per Room has been set to 0

-  Fixed aim assist not working through portals

-  Fixed a navmesh issue in the 8-2 Second Deathcatcher arena that caused enemies to sometimes get stuck inside the stairs

-  Fixed OOPS Blockers being visible above the entrance door after the player completes the secret 8-2 arena

-  Fixed the decorative turrets in 7-2 not functioning properly

-  Fixed the blood spray in 7-4's ending not working

-  Fixed a bug that caused the music in 1-E to fade out if the player enters the skull room vent early

-  Fixed a bug that caused Gabriel to not transition between phases when the Blind Enemies cheat is enabled

-  Fixed one of the advanced options for 8-4 being visible before the player has unlocked the level

-  Fixed Strays and Soldiers not predicting the player's movement on Brutal difficulty

-  Fixed the portal from the secret room's elevator in 8-2 not rendering correctly

-  Fixed the ceiling theater effect in 8-2 and 8-3 not working at some camera angles

-  Sanding a Cerberus no longer causes their speed to reset to their Standard difficulty speed on Violent and Brutal

-  Fixed a Cyber Grind coin issue where coins would no longer reflect non-default beams properly after the player punches a cannonball into the void

-  Fixed the Mirror Reaper's hit sound not playing

-  Fixed floating limbs appearing at the world origin of the Cyber Grind when the amount of gibs surpasses the maximum gib count or between waves

-  Powers no longer sometimes cause thin strings of gold when some of their gibs are deleted