Nightmare of Mensis

Bloodborne guide · After passing through the Lecture Building

You arrive in a twisted dreamscape illuminated by an eerie glowing tower that inflicts Frenzy on anyone caught in its line of sight. You must advance up the rocky path, breach the grand citadel, and ascend past Micolash to face Mergo's Wet Nurse at the summit. Along the way, you can pull a lever to drop the source of the Frenzy into an abyss to safely explore the lower depths.

Don't miss 0/1

Living String: Acquired by killing the Brain of Mensis after dropping it into the dark abyss below

Items

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Blood Rock: Dropped into a lower abyss after pulling a lever, accessible via a broken cage elevator holeEye Rune: Found on a corpse on the balcony near the Giant Brain before dropping itIron Key: Found on a corpse in the lower labyrinth area during the fight with MicolashMensis Cage: Dropped by Micolash, Host of the Nightmare upon defeatOne Third of Umbilical Cord: Dropped by Mergo's Wet Nurse upon defeat

Secrets

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Stepping off the cage elevator mid-descent reveals a hidden hallway that leads to the switch that drops the Brain of Mensis into the pit.Performing the "Make Contact" gesture in front of the dropped Brain of Mensis in the dark pit and holding it until your arms switch positions awards the Moon rune.

Enemies

Brain of Mensis

Steal / drop Living String

Inflicts Frenzy through line of sight across the outdoor area until dropped with a lever.

Silverbeast

Weak to Fire

Emits parasitic worms upon death unless defeated with fire damage or a visceral attack.

Winter Lantern

Weak to BoltSteal / drop Blood Gems

Sings in the lower towers and inflicts rapid Frenzy build-up while attempting a high-damage grab attack.

Evil Eye Collector

Wanders the bridge outside the castle surrounded by spider-headed birds and dog-headed beasts.

Maneater Boar

Weak to FireSteal / drop Blood Vials

Patrols the upper staircase leading to Mergo's Wet Nurse; some have clusters of eyes across their heads.

Shadows of Yharnam

Weak to Bolt

Appear as normal enemies along the staircase to the final boss, using both sword and pyromancy attacks.

Micolash, Host of the Nightmare

Weak to PoisonSteal / drop Mensis Cage

Runs through a labyrinth of rooms and casts A Call Beyond in his final combat phase.

Mergo's Wet Nurse

Weak to BoltSteal / drop One Third of Umbilical Cord

Uses multiple blades and summons a blinding purple fog that produces clones of herself.

Tips

Stock up on Sedatives and wear the Ashen Hunter set to increase your Frenzy resistance before crossing the open bridges.
You can use Poison Knives to whittle down Micolash from the balcony above before dropping into the final room with him.
When Mergo's Wet Nurse shrouds the arena in purple fog, focus on running clockwise along the edge of the arena instead of attacking until the darkness fades.

Not listed for this area: shops and people.

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Lecture Building

Upper Cathedral Ward

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