Third Floor

Open the door near the stairs to enter the Great Hall.

Check the ancient texts for a Scroll of Banastor(2).

Loot the charred corpse, which will spawn enemies.

Defeat the incoming Arcane Horror using a ranged character.

Loot the charred corpse at the far end, a pile of books, and the Apprentice Note to update the quest “Watchguard of the Reaching”.

Enter the next room and loot the charred corpse and chest.

Open the door to the next room and immediately disarm the Leghold Trap.

Allow the Abominations to come to you and defeat them. Looting them should update a codex.

March further into the room to spawn and defeat more demons.

Loot the soldier’s corpse in the middle of the room.

Enter the first room on the right, disarm the trap inside the door.

Kill the Possessed Templar and loot the closet for a torn page yielding Codex 324: Five Pages, Four Mages, and a pile of books.

Enter the next room on the right to find a cabinet and another torn page.

In the next room, defeat the Charmed Templars controlled by a Desire Demon.

Loot the two more torn pages and the armoire in this room.

In the final room, collect the last torn page and loot the chest. This should grant the quest “Five Pages, Four Mages“.

Approach the door leading to the middle area; the game will auto-save.

Enter and defeat the Abomination-led enemies.

Loot everything, including the White Runestone from the Abomination.

Leave this room and enter the large room with statues along the back wall.

Examine the statues in the following order: left-most holding a bowl, right-most with a sword pointed upward, middle with a sword pointed downward, and then the statue in the middle room with the shield. This will update a quest.

Head to the fourth floor.