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Conjunctivius Boss Guide — Dead Cells Insufferable Crypt Fight

Updated 30 Oct 2026 Source Dead Cells Wiki (deadcells.wiki.gg) — Bosses page (Conjunctivius listed as a first-tier boss in the Insufferable Crypt, reached on the route requiring the Ram Rune, no status immunities) and Biomes page (Insufferable Crypt as a first-boss biome). By Antewise Editorial
Data status: The facts on this page were checked against the source named above. Game values can still shift with a patch, so re-check anything that looks off.

Where she is

Conjunctivius sits in the Insufferable Crypt, an alternate first-boss biome. Getting there runs through the Ancient Sewers, which are opened by the Ram Rune — so she is the first boss you meet only if you have already gone out of your way for Ram.

That makes her the harder of the two first bosses in practice: the route to her assumes more progression, and the fight itself has a layer the Concierge does not.

Immunities: none, and that matters

The wiki lists no status immunities for Conjunctivius. Freeze, stun, slow and root all land.

This is genuinely useful information because her fight is built around adds — the tentacles. A control effect does not just add damage, it buys you the window to clear tentacles without being punished, which is the actual mechanic of the fight.

How the fight works

She is a large stationary eye with tentacles that sweep the arena. The loop is:

  1. Clear tentacles first. They are the thing that actually kills you. Tunneling on the eye while tentacles are up is the classic loss.
  2. Punish the eye during the window after a tentacle sweep.
  3. Watch the arena edges. Her sweeps cover horizontal space, so the middle and the vertical dodge are safer than backing into a wall.

The ranged trap

A bow or a tactics build looks like the obvious answer to a big stationary eye, and it is — right up to the point the tentacles reach you. Ranged builds that have no answer for a close sweep die here more often than melee builds do, because melee builds are already in the habit of rolling through.

If you are running tactics, bring a crowd-control skill, not just damage.

From 1 BC upward

As with every boss, she skips her first phase once a Boss Cell is active. Her openings get faster and the tentacle sweeps come sooner, which compresses the window you use to punish.

What to bring

  • Something that handles multiple targets, not just single-target burst.
  • A control effect if you have one — she has no immunities to waste it on later.
  • A full flask. The passage before the arena is the last safe heal.

Frequently asked questions

Where is Conjunctivius in Dead Cells?

In the Insufferable Crypt, a first-boss biome. The route runs through the Ancient Sewers, which means you need the Ram Rune to get in — so she is the alternate first boss rather than the default one.

Is Conjunctivius immune to status effects?

No, the wiki lists no immunities for her. Freeze, stun and slow all work, which matters because her fight is built around adds that you want controlled.

Why do I keep dying to Conjunctivius?

Almost always the tentacles. Players tunnel on the eye and get hit by the adds, or bring a short-range weapon and cannot reach the eye safely. Clear the tentacles, then punish.

Is Conjunctivius harder than the Concierge?

Yes, for most players. She adds an add-management layer the Concierge does not have, and reaching her at all requires more unlocks, so you meet her with a more demanding route behind you.

More Dead Cells guides

Sources

Figures and item data on this site are read from the game’s own reference wiki before publishing. Where a value could not be confirmed there, the page says so instead of filling the gap.