High Hall

Walkthrough

The area in the order you play it. Tick things off as you go: they tick off in the checklists below too.

1. 1

   The Watch Citadel

   When you emerge from the Astral Prism portal into the ruined Upper City approach, pass a DC 30 Persuasion or Deception check if confronted by Kith'rak Voss to keep his githyanki strike force on your side. Step into the assembly room to rally your forces and unlock the Call Forth Allies action. Before heading out, buy high-tier elixirs and Angelic potions from the vendor Koll the Red.

   Tip: Stock up heavily on Potions of Angelic Slumber and Reprieve from Koll the Red, as conventional camp rests are disabled for the rest of the campaign.

   Watch out: Failing the DC 30 check with Kith'rak Voss turns him hostile, permanently forfeiting your githyanki allied summons.

2. 2

   The Watchmen Gate

   Exit the citadel into the gateway corridor where four fleeing Watchmen—Gyordi, Goodge, Fry, and Ebber—scramble past. Pass a DC 20 Insight check followed by a DC 20 Persuasion, Intimidation, Deception, or Strength check to rally them into holding the line as expendable frontline fighters for the upcoming fight.

   Tip: If you intend to take the courtyard route, recruit the Watchmen so they soak up early ranged damage from cultists.

   Watch out: On Tactician and Honour Mode, this restoration pod is absent, so conserve your spell slots and rely on potions instead.

3. 3

   Infiltrating the Upper City Sewers

   Bypass the chaotic open courtyard entirely by heading down to the sewer entrance at the iron gate (X: 258, Y: 33) near the citadel or descending through the northern metal balcony door (X: 263, Y: 126). Inside the northern room before the descent, lockpick the Gilded Chest (DC 15 Sleight of Hand) to grab valuable combat draughts and poisons. Clear through the subterranean passage filled with cranium rats, cultists, and the Death Knight Stalker Svignee to reach the far side of the grounds uncontested.

   Potion of Angelic Reprieve: Inside a locked Gilded Chest located in a small room behind a metal door near the northern sewer passage Don't missPurple Worm Toxin: Found in the locked Gilded Chest by the northern metal room before the courtyard Don't missA shortcut through the Upper City Sewers allows you to circumvent the massive courtyard clash entirely by dropping down near the sewage stream into a rusted gate or through a northern metal doorway.High Hall Key: from the entrance of the Upper City Sewers, north side of Stalker Svignee's chamber to the crushed rubbleHow: search the corpse of Merug 'Curly' Dugald pinned beneath the fallen rubbleMissable because: permanently lost once you climb the summit Brain Stem Don't miss NewPotion of Angelic Slumber: from the center of the Upper City Sewers, on the corpse of the Death Knight Stalker SvigneeHow: defeat Stalker Svignee and loot his remainsMissable because: permanently lost once you climb the summit Brain Stem Don't miss New

   Tip: Sneaking through the sewers saves your precious Call Forth Allies summons for the summit instead of expending them on the courtyard brawl.

   Watch out: Leaving the sewers into High Hall seals off this underground section, permanently locking out any chests or corpses left behind.

4. 4

   The High Hall Courtyard Clash

   If you forgo the sewer shortcut, push through the central gateway into an open warzone swarming with Mind Flayers, Winged Horrors, Intellect Devourers, and a Spectator. You can reach the elevated room overlooking the gate to pull the lever and seal off pursuing reinforcements, or check the locked northeastern door to direct the hiding civilians (Robyn and Tilly) to safety. Fight your way straight across the plaza to reach the main grand double doors of High Hall.

   Potion of Supreme Healing: from the courtyard entrance, up the outer southern balcony stairs to the Heavy ChestHow: pass a DC 15 Sleight of Hand check to pick the lockMissable because: permanently lost once you enter the interior of High Hall Don't miss NewHigh Hall Gate Lever: from the courtyard entrance, up the stone stairs to the elevated gatehouse chamber overlooking the portcullis New

   Tip: You do not need to eliminate every enemy in the courtyard; you only need to get your party across to the interior entrance.

   Watch out: Any allied factions summoned via Call Forth Allies that perish during this brawl are dead permanently and cannot be called again atop the Netherbrain.

5. 5

   The Staircase Gauntlet

   Enter the lower ground floor of High Hall and ascend the spiraling tower staircase as an overhead Nautiloid marks the ground with red orbital strike reticles and drops waves of Mind Flayers and cultist reinforcements. Sprint through the crossfire rather than standing your ground, as reaching and opening the summit double doors with a single character instantly triggers a cutscene that pulls the whole party through safely.

   Key fight: The High Hall Interior Staircase Gauntlet

   Tip: Use Dash, Dimension Door, Fly, or Potion of Invisibility on a high-mobility character to sprint directly to the top door and skip fighting the endless waves of Nautiloid reinforcements.

   Watch out: Standing inside the red targeting reticles when the Nautiloid bombards at the start of a turn deals devastating area-of-effect damage that can instantly down multiple companions.

6. 6

   The Summit Brain Stem

   Catch your breath inside the final safe staging room at the base of the summit Brain Stem. Use the Illithid Restoration Pod and loot the surrounding Gilded Chests to replenish your resources and collect Potions of Angelic Slumber. If Gale is in your party and his Netherese Orb condition remains open, you can speak with him here to let him ascend alone and detonate the orb, or interact with the stem to begin the final climb together.

   Potion of Angelic Slumber: from the summit Restoration Pod, along the staging platform to the Gilded ChestHow: open the unlocked Gilded ChestMissable because: permanently lost once you interact with the Brain Stem to climb the Netherbrain Don't miss New

   Tip: Drink a Potion of Angelic Slumber or interact with the summit pod to enter the final boss encounter at maximum health, spell slots, and ability charges.

   Watch out: Interacting with the upper Brain Stem is an absolute point of no return; any unlooted chests or missed items in High Hall become permanently inaccessible.

What you decide here and what it leads to.