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Official announcement summary

New Hotfix Out Now — PC, PS5, and Xbox Series

Cold Symmetry's September 14, 2026 Mortal Shell II hotfix ships on PC, PS5, and Xbox Series: Proxima Biosampler stuck, Lazlo's Temperament glitch, Mether's Severance at Genessa, and multiple Stone fixes.

· Source tier: official Steam announcement

What was announced

Cold Symmetry posted New Hotfix out now for PC, PS5, and Xbox Series. The notes fix Proxima getting stuck in the Biosampler animation and Lazlo's Temperament perk infinite glitch. On items and Stones, Mether's Severance can now be used at the Genessa trainer, Colossus Stone can be canceled mid-execution, and Justiciar, Gloombound, and Egon's Stone received durability and exploit fixes, plus related dungeon and Summon Stone issues. The same post also lists enemy and boss fixes (Hexapod, freeze, Twin Sester, Starved Harridan), NPC fixes (Zhirelle NG+, Muttons, Genessa dialogue), environment and hazard fixes, and crash or stability work.

Key points

  • Platforms: PC, PS5, and Xbox Series.
  • Shells: fixed issues that caused Proxima to get stuck in the Biosampler animation.
  • Fixed Lazlo's Temperament perk infinite glitch.
  • Items & Stones: Mether's Severance can now be used at the Genessa trainer.
  • The Colossus Stone's ability can now be canceled mid-execution.
  • Fixed Justiciar Stone durability issues.
  • Fixed Gloombound Stone losing durability from Gloom sources other than enemies.
  • Fixed Egon's Stone Gloom exploit; fixed dungeons not loading correctly after using Egon's Stone.
  • Fixed spawning and targeting issues with Grisha Remnant and the Summon Stone.
  • Enemies & bosses: Hexapod diving attack after death, freeze-related issues, Twin Sester leave-after-spawn, Starved Harridan stuck/dying.
  • NPCs: Zhirelle NG+ interaction, multiple Muttons in the hub, sidearm damage on certain NPCs, Genessa dialogue and training tutorials.
  • Environment & world: Citadel Annex camera, Ashen Cathedral death volumes, Lazlo dungeon trap, burn/stasis hazard values, collision and geometry.
  • Stability: crash and game stability improvements.

Context for current players

This summary follows Cold Symmetry's official Steam post New Hotfix out now, dated September 14, 2026.

The official notes do not publish a Steam build number in the news body. Check your storefront for the live build.

This page does not invent percentages, stone values, or unlisted fixes beyond that Steam post.

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More official news summaries

Source: This page is an independent summary of an official Mortal Shell II Steam announcement. Read the original for the publisher's complete wording and media.