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Some of the guards tell of throwing bodies down there to feed her. Perhaps she just wanted to play?

Conjunctivius is the second tier 1 boss in the game and is an alternative to the Concierge. She is encountered in the Insufferable Crypt, in which main path requires the Ram Rune IconRam Rune.

Conjunctivius is shackled to the walls by three chains, one for each phase. Four platforms are arranged around the room.

Damage of a single hit is capped at 15% of Conjunctivius's maximum health. The damage cap for her tentacles is 25%.


In 1+ BSC, Conjunctivius goes straight to the second phase.

Primary attacks[]

Body slam

  • Description: Conjunctivius projects a beam of red light, then charges in that direction.
  • Can be blocked, parried, and dodge rolled.

Magic bolts

  • Description: Conjunctivius shoots a burst of 7 to 8 green bolts out from her eye in a sun pattern.
  • Can be blocked, parried, and dodge rolled.
  • After each tentacle phase, she will fire an additional burst. For example, after the third, she will fire four bursts of green bolts.

Aura of laceration

  • Description: A red circle flashes around Conjunctivius, then bursts into electricity, damaging on contact.
  • Cannot be blocked or parried, but can be dodge rolled only if you dodge out of the area.

Rain of bolts

  • Description: The platforms get retracted, forcing you on the ground. Conjunctivius moves to the top of the room and floats side to side while firing a barrage of magic bolts.
  • Can be blocked, parried, and dodge rolled.

Summon tentacles

  • Description: After certain health thresholds, Conjunctivius will break a shackle and summons tentacles. All the platforms are deactivated and she moves to the center of the room, gaining damage immunity as well as a force field.
  • The tentacles behave the same as the Sewer's Tentacle, their attacks are listed further down.
    • Tentacles behave separately from each other and may do different attacks at the same time.
    • She spawns 3 tentacles in the first phase. An additional tentacle is spawned for each subsequent phase.
  • When a tentacle is defeated, all enemy activity briefly ceases as Conjunctivius takes some damage instantly before firing harmless lightning bolts to the tentacles. The remaining tentacles will increase in speed and change their color from blue to purple, before crimson.
  • When the tentacles are all defeated, the boss resumes her primary attacks.

Tentacle attacks[]

Piercing strike

  • Description: The tentacles burrow underground and follows the player, popping up to deal damage.
  • Can be blocked, parried and dodge rolled.

Area sweep

  • Description: In the second and third phase, a tentacle can charge across the room, dealing damage on contact and pushing the player back a bit.
  • Can be blocked, parried, and dodge rolled.


Primary attacks[]

Body slam

  • The attack is telegraphed by a red line along which the attack will travel, so you can easily get out of the way or place traps in its path.
  • This attack has the boss staying still for a decent time, so a good strategy is to bait the boss into a position where she can be easily hit such as on or near a platform or the ground.
    • A good tactic is to hug a wall and wait there until the telegraph starts. Lay down a Wolf Trap IconWolf Trap and roll into the wall to dodge the hit. Conjunctivius will be trapped, allowing you to attack with any weapon you want.
      • Placing a turret as well can increase damage dealt.
      • Be aware that the boss can use Aura of Laceration in this position.

Magic bolts

  • The magic bolts can be blocked or parried back to the boss with any shield. You can attempt to dodge them by rolling or running but this comes with the risk of walking in the path of another bolt.

Aura of laceration

  • Staying out of its range is easy as the aura is only slightly bigger than the boss itself. Use ranged weapons or AoE/DoT inflicting weapons/skills to deal damage.
  • This attack has the boss staying still for a decent time, so a good strategy is to bait the boss into a position where she can be easily hit such as on or near a platform or the ground.
    • Lay down a Wolf Trap on her position when the attack starts and she will be trapped allowing you to attack with any weapon you want after the aura disappears.
      • Placing a turret as well can increase damage dealt.

Rain of bolts

  • The magic bolts can be blocked or parried back to the boss with any shield. They can be dodged by rolling or running but this comes with the risk of walking in the path of another bolt, so a good strategy is to stand at the edge of the arena and roll into the wall to prevent this.


  • Conjunctivius's Tentacles move around above and underground, so use a trap or freeze them to keep them in place. This tactic can stop the Area Sweep attack.
    • Underground tentacles can be tracked by the dirt they scatter while moving, but a DoT effect can be applied to a tentacle which will make the icon stay visible after they are buried, giving their position away.
  • They have fronts and backs, so striking them with the Assassin's Dagger IconAssassin's Dagger or Vorpan IconVorpan is usually quite effective. The Giantkiller IconGiantkiller does not deal critical hits to the tentacles since they are not considered a boss.
    • The Melee Mutation IconMelee mutation can further help by slowing down the fast-moving tentacles. This is especially helpful for brutality builds.

Piercing Strike

  • This attack can be parried. If they are underground, you must move a little to the side and face where the tentacle will erupt to parry. It is difficult to time, but doable.

Area Sweep

  • This attack always comes from the side of the wall that is the furthest away from you.
  • This attack can be parried.
    • However, if they are not stunned (may happen when using Punishment IconPunishment), they will immediately submerge after the parry and then burst from the ground. A skilled player would make sure that the tentacles will stay in place before starting to attack.


  • Most crowd-control effects (freezing/slowing/etc.) will have very brief (if any) effect on the main body or the tentacles. But they are affected by bleed, poison and fire damage.
    • However, the Wolf Trap IconWolf Trap is an exception. As she is the first boss, she will be quite vulnerable to the Wolf Trap's stun effect, allowing weapons to deal massive damage to her easily and it negates her main advantage, which is her high mobility. You will have to stand close enough for her to ram into them, however.
    • The player can exploit her ram attack for this purpose. If enough damage is dealt to her, the tentacle phases will begin consecutively due to the drastic amount of health loss.
  • Since many attacks can be parried, a shield is useful to blunt attacks and deal damage.
    • The Bloodthirsty Shield IconBloodthirsty Shield can apply AoE bleed to the main body and all tentacles, making it easier to apply damage-over-time.
    • The Rampart IconRampart can be useful to deal with the tentacle phases, as its parries give you force fields to damage the tentacles without needing to roll-dodge.
  • The Cleaver (Skill) IconCleaver is useful for tentacle phases, as you can lure them onto the grinder and apply consistent damage-over-time.
    • Items that apply poison are also quite effective.
  • Long-range melee weapons like whips and spears have some advantage, as well as weapons with fast successive swings.
    • Valmont's Whip IconValmont's Whip is especially recommended, as it does critical hits at the tip, meaning that the player can easily take advantage of it's range while still able to avoid the boss' attacks. Each critical hit can take off significant chunks of her health easily. However, it seriously struggles to take out tentacles alone.
    • Magic Missiles IconMagic Missiles are also a very strong pick, allowing you to hit the boss nearly anywhere on the map, if you can get the shots pierce first target affix, the tentacles are much easier to defeat.
  • Oil Grenade IconOil Grenade and Torch IconTorch perform well due to AoE DoTs.
  • She does not have a front or back, so Vorpan IconVorpan and Assassin's Dagger IconAssassin's Dagger are not very effective. They can still be used against the tentacles, however.
  • Turrets are useful, but with a few exceptions, they are generally less effective due to Conjunctivius moving quickly out of their range. They can also distract to the boss and its tentacles from you while you deal damage undisturbed (enemies prioritize deployed turrets and Biters spawned from Swarm IconSwarm).
  • The Barnacle IconBarnacle, although ineffective against tentacles and is practically unable to distract them, can easily hit the boss and chip it off if deployed correctly on one of the platforms.


A series of lore rooms scattered around the Toxic Sewers and Ancient Sewers explain how Conjunctivius came to be.

It begins with a nameless, faceless corpse in the Sewers, likely infected by the Malaise. The body is bloated and one of its arms has mutated into a tentacle[1]. Green goo trails from the body towards a small hole in the wall.

"The body is all bloated... One of his arms changed into a tentacle. It's as if the body had started to mutate! A viscous substance is oozing out of the body and across the floor... like a snail's trail."

After this encounter, the Beheaded finds that same trail of green goo and an empty cocoon next to a bigger hole in the wall, made by an adolescent Conjunctivius [2].

"(...) This strange substance on the ground again. The trail leads to a sort of... giant cocoon. (...) The trail ends at this hole. And it's one hell of a big hole."

Later, the Beheaded stumbles upon the trail of green goo close to a corpse. The trail leads to the remains of a huge cocoon and a gigantic hole[3], which was carved by the adult Conjunctivius as she escaped.

"Still this trail on the ground. Whatever this thing is, it's pretty obvious that it... grew. Or evolved. Or mutated."

The corpse doesn't seem infected and wears prisoner clothes, which may imply it's the prisoner who escaped from the Prisoners' Quarters. Why he is uninfected despite being killed by Conjunctivius is unclear. Finally, a message left by soldiers tells how difficult it was to chain Conjunctivius, likely an order of the King.[4] This explains why Conjunctivius is imprisoned in the Insufferable Crypt when the Beheaded arrives.

Make sure you don't miss your guard duty outside the MONSTER's room. It wasn't easy to chain up. Wouldn't like to have to do it all over again!

Conjunctivius seems to feed on corpses, or is presumed to by the soldiers. She also makes illegible sounds that may be mistaken for human noise.

"Strange cries can be heard from the storehouse. Surely they're not human... No, no."

"Some of the guards tell of throwing bodies down there to feed her. Perhaps she just wanted to play?"


  • Prior to the v0.7, the Baguette Update, Conjunctivius was named The Watcher. In the game files, she is called Beholder.
  • For a brief period, Conjunctivius was named Conjonctivius.
  • Conjunctivius's name is a reference to conjunctivitis, an inflammation of the eye commonly known as pink eye.
  • When defeated, her eye will cycle through various colors before she explodes.
  • Conjuctivius makes an appearance at the end of the Dead Cells' animated release trailer, albeit with a different coloration and distorted proportions.
  • She is somehow still able to move around even without the chains.
  • The enemy derived from her is the Sewer's Tentacle. This enemy imitates all attacks used by her tentacles during the boss fight.
  • There is currently a bug where the fight with Conjunctivius can somehow start while locking the player outside, leaving them helpless.




The ConciergeThe Concierge  •  ConjunctiviusConjunctivius  •  Mama TickMama TickTBS  •  The Time KeeperThe Time Keeper  •  The GiantThe GiantRotG  •  The ScarecrowThe ScarecrowFF  •  The Hand of the KingThe Hand of the King  •  CalliopeEuterpeKleioThe ServantsTQatS  •  The QueenThe QueenTQatS

link True Ending Spoiler (5 BSC):   The Collector (Boss)The CollectorRotG