All Vaults of Forbidden Knowledge Locations and Codes

Find all Vaults of Forbidden Knowledge in hell is us, including Vault of the Copse, Vault Of The Mire, and Vault of the Knoll, with locations and codes.

Vault of the Copse - Senedra Forest

The first Vault is located in the Senedra Forest, next to the Field Camp. You’ll need to come here early in the story to find the Medkit to get the key for the APC. If you’re coming back here, simply run into the forest to the left of the APC, and follow the X’s marked on the trees. Once you arrive at the field camp (tent), go behind it and look at the western wall. There will be a small cave here that leads to the Vault.

From the APC, follow the X’s on the trees to find the Field Camp. Behind it is a cave.

Follow the cave to the end to find the Vault.

Vault of the Copse Code

You can unlock the Vault by selecting these symbols in the order that they are shown.

Select these symbols in the same order from left to right.

Vault of the Copse Rewards

Inside the Vault, you’ll obtain the following items:

• Exploration Item: Amine Prism - Sigma (Used to close Sigma Timeloops)
• Misc Item: Letter - To Rosetta (A note about the origin of the demons and the time portal anomalies)
• Misc Item: Parchment - Preparations (A note about the construction of a strange, large contraption)
• Misc Item: Tome - A Bitter Triumph (Clues about closing Timeloops)
• Glyph: Overwhelm (Grief, Charge Mechanic, No Lock on, Cost: 200, Radius: 5m,7.5m,10m, Pushback: 10M, Power: Grief energy gathers and discharges around you, overwhelming nearby Lymbic Entities and stunning them)
• Glyph: Gluttony (Ecstasy, Tap Mechanic, No Lock on, Cost: 150, Stun Duration: 2 seconds, Attraction Radius: 15m, Power: A deep yearning discharges a vortex drawing in all Lymbic Entities into melee range and stunning them upon arrival)
• Glyph: Feed on Fear (Terror, Hold Mechanic, Yes Lock on, Cost: 30/s, Healing: 232/sec, Damage: 63/sec, Power: You create a link of pure fear between you and the target Entity, siphoning vitality from its terrified state)

Vault Of The Mire - Acasa Marshes

Although this Vault is in the Acasa Marshes, you won’t be able to access it until you obtain the second Keystone in Act 2 (unless you know the gate code). The reason for this is that it is locked behind the Observation Outpost to the northeast of Jova, which requires a code to open its gates. Normally, you’ll get the code after a scene in Act 2, telling you to check under the seat in the APC for the code. The Outpost is easier to reach by heading northeast from the Blacksmith, past the ON building, and down the stairs.

From the Blacksmith, exit Jova via the northeast.

The code to the gate for us was 151991, which should be the same for you; if it isn’t, you’ll need to check the APC Code Sheet obtained via the methods above to obtain it. Upon opening the gate, defeat the enemies and loot the initial area to complete the Outpost Mystery, and then follow the path around until you can go into a cave to your left. The Vault will be at the back of the cave.

Vault Of The Mire Code

You can unlock the Vault by selecting these symbols in the order that they are shown.

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Vault Of The Mire Rewards

Inside the Vault, you’ll obtain the following items:

• Misc Item: Parchment - A Grand Stratagem (An ancient parchment discussing the creation of a new celebration)
• Misc Item: Parchment - Penance (An ancient parchment expressing concern for a contrite colleague)
• Misc Item: Tome - The Endless Horror (Recounting horrors discovered within the anomalies)
• Misc Item: Tome - Anson Lingen, The Wandering Mason (A tome about Anson Lingen, who reshaped Hadea)
• Weapon: Twin Axes of Ecstasy (Grade: 4, Level: 15)
• Weapon: Sword of Grief (Grade: 4, Level: 15)
• Weapon: Greatsword of Rage (Grade: 4, Level: 15)
• Weapon: Polearm of Terror (Grade: 4, Level: 15)
• Relic (Active): Heart of the Griffon (Mechanic: Tap, Lock-On: No, Cooldown: 6:00, Endurance Restoration: 100%, Lymbic Restoration: 100%, Power: _Timeless Rejuvenation_ - Find yourself born anew with Health, Stamina, and Lymbic Energy fully restored)

Vault of the Knoll - Vyssa Hills

The Vyssa Hills Vault is a sneaky one. From the APC (if you haven’t completed the area), follow the rocky wall northwest until you reach the waterfall. Go up the slope around the waterfall and look down to the west. Drop to the rocks below to go behind the waterfall and follow the long cave to the Vault. If your APC has moved, simply drop off the ledge in front of you and head south.

From the APC, follow the wall on your left to find a waterfall. Go around the slope in front and drop on the rocks below the waterfall.

Go through the waterfall and follow the path to find the Vault.

Vault of the Knoll Code

You can unlock the Vault by selecting these symbols in the order that they are shown.

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