---
key: mechanic/boss-fight-atlas--boss-objective-linked-invulnerability
type: mechanic
id: boss-fight-atlas--boss-objective-linked-invulnerability
lang: en
title: Objective-linked invulnerability
summary: Completing a separate objective removes the main opponent's protection.
updatedAt: '2026-10-22'
status: active
url: >-
https://gamemechanics.pro/en/knowledge/mechanic/boss-fight-atlas--boss-objective-linked-invulnerability/
jsonUrl: >-
https://gamemechanics.pro/api/v1/knowledge/en/mechanic/boss-fight-atlas--boss-objective-linked-invulnerability.json
markdownUrl: >-
https://gamemechanics.pro/content/knowledge/en/mechanic/boss-fight-atlas--boss-objective-linked-invulnerability.md
aliases: []
tags:
- Boss fights
- Encounter goals and vulnerability
sourceIds:
- source-072ba1933b8cca54
- source-ca891d593088eef9
- source-abd71723ac4cf052
- source-b1c9e0c65cf5fe60
- source-cedf7d1ac75b4568
- source-c151324fe6097460
- source-d1d02d606ee5542a
- source-3d4e902250b5b05e
- source-34ce8d1a32766f38
- source-47c8bc71735b840f
sources:
- id: source-072ba1933b8cca54
title: 'Boss Fight Atlas: Objective-linked invulnerability (RU)'
url: >-
https://polyakovin.github.io/boss-fight-atlas/ru/mechanics/objective-linked-invulnerability/
verifiedAt: null
- id: source-ca891d593088eef9
title: 'Boss Fight Atlas: Objective-linked invulnerability (EN)'
url: >-
https://polyakovin.github.io/boss-fight-atlas/en/mechanics/objective-linked-invulnerability/
verifiedAt: null
- id: source-abd71723ac4cf052
title: Uumuu · Hollow Knight
url: 'https://www.youtube.com/watch?v=NOSoOqEsnv0&t=166s'
verifiedAt: null
- id: source-b1c9e0c65cf5fe60
title: 'Rennala, Queen of the Full Moon · Elden Ring'
url: 'https://www.youtube.com/watch?v=_k1iMaFfbhg&t=8s'
verifiedAt: null
- id: source-cedf7d1ac75b4568
title: Megaleg · Super Mario Galaxy
url: 'https://www.youtube.com/watch?v=MiAuxjnuGzE&t=54s'
verifiedAt: null
- id: source-c151324fe6097460
title: 'Boss Up: Boss Battle Design'
url: 'https://media.gdcvault.com/gdc2018/presentations/Keren_Itay_BossUp.pdf'
verifiedAt: null
- id: source-d1d02d606ee5542a
title: Rennala — Eldenpedia
url: 'https://eldenring.wiki.gg/wiki/Rennala'
verifiedAt: null
- id: source-3d4e902250b5b05e
title: Uumuu — Hollow Knight Wiki
url: 'https://hollowknight.wiki/w/Uumuu'
verifiedAt: null
- id: source-34ce8d1a32766f38
title: Super Mario Galaxy walkthrough — Megaleg's Moon
url: >-
https://gamefaqs.gamespot.com/switch/559166-super-mario-galaxy-plus-super-mario-galaxy-2/faqs/51111
verifiedAt: null
- id: source-47c8bc71735b840f
title: Hollow Knight
url: 'https://www.youtube.com/watch?v=NOSoOqEsnv0&t=188s'
verifiedAt: null
relations: []
placements:
- catalogId: boss-fight-atlas
id: boss-objective-linked-invulnerability
title: Boss fights
url: >-
https://gamemechanics.pro/en/mechanics/boss-fight-atlas/#boss-objective-linked-invulnerability
categoryIds:
- catalog-part-11
supersededBy: []
attributes:
preview:
updatedAt: '2026-10-22'
title: Objective-linked invulnerability
description: Completing a separate objective removes the main opponent's protection.
image:
src: images/mechanics/boss-final-nosooqesnv0-188.webp
width: 854
height: 480
game: Hollow Knight
sourceUrl: 'https://www.youtube.com/watch?v=NOSoOqEsnv0&t=188s'
originalUrl: 'https://www.youtube.com/watch?v=NOSoOqEsnv0'
sourceFrameSeconds: 188
credit: Team Cherry; gameplay capture by 2CPhoenix
rights: >-
Game graphics © Team Cherry. Gameplay recording by 2CPhoenix. Original
visible source markings retained. All rights reserved; excluded from
portal MIT and CC BY 4.0.
caption: 'Hollow Knight, Godhome: jellyfish cores remove Uumuu’s protection'
alt: 'Hollow Knight, Godhome: jellyfish cores remove Uumuu’s protection'
markers:
- x: 79
'y': 69
label: An auxiliary jellyfish core must be directed into the shielded boss
tips:
- 'Show the separate objective, its result and the following attack window.'
examples:
- title: Hollow Knight
url: 'https://www.youtube.com/watch?v=NOSoOqEsnv0&t=188s'
endsAt: null
provenance: >-
Editorial reference index based on the 124 public Boss Fight Atlas mechanic
pages checked on 2026-10-20. Original concise RU/EN definitions by
gamemechanics.pro; source categories, game/boss associations and reference
URLs retained from the atlas. Linked materials retain their original rights;
references are upstream attributions, not independent verification.
license: CC-BY-4.0
codeLicense: MIT
attribution: gamemechanics.pro contributors
catalogKey: catalog/boss-fight-atlas
---
# Objective-linked invulnerability
id: boss-fight-atlas--boss-objective-linked-invulnerability
type: mechanic
key: mechanic/boss-fight-atlas--boss-objective-linked-invulnerability
lang: en
status: active
url: https://gamemechanics.pro/en/knowledge/mechanic/boss-fight-atlas--boss-objective-linked-invulnerability/
Completing a separate objective removes the main opponent's protection.
## At a glance
[Hollow Knight](https://www.youtube.com/watch?v=NOSoOqEsnv0&t=188s) · Game graphics © Team Cherry. Gameplay recording by 2CPhoenix. Original visible source markings retained. All rights reserved; excluded from portal MIT and CC BY 4.0.
[Source recording](https://www.youtube.com/watch?v=NOSoOqEsnv0), 188 s
1. An auxiliary jellyfish core must be directed into the shielded boss
- Show the separate objective, its result and the following attack window.
- [Hollow Knight](https://www.youtube.com/watch?v=NOSoOqEsnv0&t=188s)
## How it works
Completing a separate objective removes the main opponent's protection.
## Variants
### How the technique works
- Completing a separate objective removes the main opponent's protection.
## Context and limits
A concise reference to all 124 Boss Fight Atlas mechanics across its 14 source sections. Each entry includes a definition, full RU/EN lesson links, game references and further reading retained from the source. Animations and detailed rules remain in the atlas.
## Connected materials
## Sources and provenance
Editorial reference index based on the 124 public Boss Fight Atlas mechanic pages checked on 2026-10-20. Original concise RU/EN definitions by gamemechanics.pro; source categories, game/boss associations and reference URLs retained from the atlas. Linked materials retain their original rights; references are upstream attributions, not independent verification.
- [Boss Fight Atlas: Objective-linked invulnerability (RU)](https://polyakovin.github.io/boss-fight-atlas/ru/mechanics/objective-linked-invulnerability/) (id: source-072ba1933b8cca54)
- [Boss Fight Atlas: Objective-linked invulnerability (EN)](https://polyakovin.github.io/boss-fight-atlas/en/mechanics/objective-linked-invulnerability/) (id: source-ca891d593088eef9)
- [Uumuu · Hollow Knight](https://www.youtube.com/watch?v=NOSoOqEsnv0&t=166s) (id: source-abd71723ac4cf052)
- [Rennala, Queen of the Full Moon · Elden Ring](https://www.youtube.com/watch?v=_k1iMaFfbhg&t=8s) (id: source-b1c9e0c65cf5fe60)
- [Megaleg · Super Mario Galaxy](https://www.youtube.com/watch?v=MiAuxjnuGzE&t=54s) (id: source-cedf7d1ac75b4568)
- [Boss Up: Boss Battle Design](https://media.gdcvault.com/gdc2018/presentations/Keren_Itay_BossUp.pdf) (id: source-c151324fe6097460)
- [Rennala — Eldenpedia](https://eldenring.wiki.gg/wiki/Rennala) (id: source-d1d02d606ee5542a)
- [Uumuu — Hollow Knight Wiki](https://hollowknight.wiki/w/Uumuu) (id: source-3d4e902250b5b05e)
- [Super Mario Galaxy walkthrough — Megaleg's Moon](https://gamefaqs.gamespot.com/switch/559166-super-mario-galaxy-plus-super-mario-galaxy-2/faqs/51111) (id: source-34ce8d1a32766f38)
- [Hollow Knight](https://www.youtube.com/watch?v=NOSoOqEsnv0&t=188s) (id: source-47c8bc71735b840f)
CC-BY-4.0 · gamemechanics.pro contributors