Clear the mobs in the four rooms around the Antechamber.
Click the tablets on podiums and kill the three summoned idols from each. Their locations and types vary each time they are pulled, but they will call out "Could you have survived a walk through" followed by their plane of choice:
Arcane (magic)
Breath of Water (water)
Bubonium Bacterium (disease)
Flight of the Aviaks (air)
In the Company of Misery (hate)
Of Sun and Flames (fire)
Survivors of the Storm (storms)
Roots of Rock (earth)
Take the portal in the Antechamber of Antiquity at ( -13, 30, 43 ) Copy/waypoint -13.47, 29.56, 42.52
He charms and fears. These are curable arcane detriments, use a potion or self-cure. To avoid being overwhelmed by fears, equip a Bloodbound Blinding Gleam or equivalent belt red rune.
Kill at least the Researcher in each room. If not they assist in the fight. They also respawn if the name fight takes too long.
Unlock The Vault of Knowledge. (Go through the door at ( -58, 33, 191 ) Copy/waypoint -58, 33, 191
If you have completed the zone previously, simply click on the arch over any of the symbols. Otherwise, you have to solve the puzzle (see below).
Once the final symbol aligns the vault will unlock with all the layers dropping to floor level. Access to the new central floor area is via stepping stones.
Sanum has a buff called The Elddar Rudiments that buffs him and reduces damage. Stepping on the pads in front of a spinning column halts its rotation and removes an increment of this buff.
Midway through the fight he summons four psychic transferrences. At 20% health he becomes immune, kill all four of them, then return to hitting Sanum Ordast.
Unlocking the Vault of Knowledge[]
You must kill at least the mobs at the arches prior to starting to solve the puzzle.
You may need to adjust your camera angle to see both the arch and the top layers of the puzzle.
The aim is to get all the the symbols on the puzzle to match each arch.
Once you gave solved the puzzle once, afterwards you can just click one of the arches after the mobs are cleared and it bypasses the puzzle.
Start at The Symbol of Tal'Kesh at ( 10, 33, 197 ) Copy/waypoint 9.74, 33.20, 197.12.
Touching an Arch or its central symbol will confirm you have located the correct Arch and appropriate left control.
The left control rotates the whole stack clockwise.
Turn the left control until the bottom layer (the Stratum of Tal'Kesh) shows the same symbol as the arch with the Symbol of Tal'Kesh i.e. the first layer (1).
Move counterclockwise to The Symbol of Ixil'Dor at ( 24, 33, 153 ) Copy/waypoint 23.87, 33.36, 152.79.
The left control rotates the top 7 layers clockwise.
Turn the left control until the symbol on the Stratum of Ixil'Dor shows the same symbol as the arch with the Symbol of Ixil'Dor i.e. the second layer (2).
As each layer is aligned the symbol should be the same from the first layer (1) to the current layer. A mistake has been made if the symbols do not align. As higher layers are completed the alignment of the symbols will become more obvious.
Move counterclockwise to The Symbol of Oth'Onen at ( 64, 33, 132 ) Copy/waypoint 63.61, 33.15, 131.90.
The left control rotates the top 6 layers clockwise.
Turn the left control until the symbol on the Stratum of Oth'Onen shows the same symbol as the arch with the Symbol of Oth'Onen i.e. the third layer (3).
Move counterclockwise to The Symbol of Zaket'Ien at ( 108, 33, 145 ) Copy/waypoint 107.86, 33.15, 145.12.
The left control rotates the top 5 layers clockwise.
Turn the left control until the symbol on the Stratum of Zaket'Ien shows the same symbol as the arch with the Symbol of Zaket'Ien i.e. the fourth layer (4).
Move counterclockwise to The Symbol of Wan'Lieth at ( 129, 33, 187 ) Copy/waypoint 128.94, 33.29, 186.54.
The left control rotates the top 4 layers clockwise.
Turn the left control until the symbol on the Stratum of Wan'Lieth shows the same symbol as the arch with the Symbol of Wan'Lieth i.e. the fifth layer (5).
Move counterclockwise to The Symbol of Tevex'Thez at ( 115, 33, 230 ) Copy/waypoint 115.22, 33.26, 230.05.
The left control rotates the top 3 layers clockwise.
Turn the left control until the symbol on the Stratum of Tevex'Thez shows the same symbol as the arch with the Symbol of Tevex'Thez i.e. the sixth layer (6).
Move counterclockwise to The Symbol of Hazen'Ad at ( 74, 33, 251 ) Copy/waypoint 74.31, 33.27, 251.15.
The left control rotates the top 2 layers clockwise.
Turn the left control until the symbol on the Stratum of Hazen'Ad shows the same symbol as the arch with the Symbol of Hazen'Ad i.e. the seventh layer (7).
Move counterclockwise to The Symbol of Vel'Naen at ( 31, 33, 237 ) Copy/waypoint 30.83, 33.25, 237.49.
The left control rotates the top layer clockwise.
Turn the left control until the symbol on the Stratum of Vel'Naen shows the same symbol as the arch with the Symbol of Vel'Naen i.e. the eighth layer (8).
Once the final symbol aligns the vault will unlock with all the layers dropping to floor level. Access to the new central floor area is via stepping stones.