Besting the Bishop

Defeat the Dark Bishop. Exploit its Cursed Dragon to make it vulnerable. Ranged attacks are nearly necessary as it rarely floats down to melee range. It is not highly resistant to Magick damage and is not very fast. High Miasma can deal respectable damage, but faster, safer spells are recommended.

After defeating the Dark Bishop, loot the cathedral. Several Warrior Remains are in the center, and a rounded chest is along the northern wall.

Climb ledges beside the entrance door on the western wall.

From the first ledge, turn towards the door to find a small, jutting ledge.

From there, turn west and jump onto a ledge above the door to find a 'Recollection of another Arisen' (a collectible).

From this ledge, head south and jump onto a broken pillar to reach a higher ledge.

Turn south, go up some stairs, through a doorway, and follow the tunnel west, then north, up stairs, west again, up more stairs to the south, and into a small room with two ornate chests.

Return to the cathedral and cross east to a door leading deeper into the dungeon.

In the Corridor of the Hallowed, Barroch might be near a campsite west of the gate to the surface.

Beyond the gate, find another broken Riftstone to repair for 10,000 Rift Currency (RC).

Climb the stairs to the surface to unlock the second shortcut.

Search near the docks for a 'Recollection of another Arisen' at the end of the pier.

Head north-west down the stairs to the Lower Stratum.

Along the stairs, turn south to spot a ledge. Climb it and find a Macabre Sculpture (a collectible) near a water-spewing statue.

Return to the surface. Olra will continue her story.

Search the 'Monument of Remembrance' for entries #1-8, #11, and #12.

Find another Moonbeam Gem to claim treasure from Duskmoon Tower. The Ring of Desiccation is highly suggested as a lantern is mandatory for the Lower Stratum.

Note that the Lower Stratum is a significant increase in difficulty from the Central Stratum.

From the Rootwood Depository entrance, head north down stairs, then west down shorter stairs to reach rooms occupied by Wraiths.

Note a beacon on a pedestal east of the tunnel; it weakens enemies for 300 Rift Currency.

Head north from the tunnel to find a room to the east. Jump on a ledge to the east, break boxes, and enter a small chamber with an ornate chest that may contain a Maneater.