Uploaded September 2025 | Updated September 2026, 2 weeks ago

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Hell is Us - All Vaults of Forbidden Knowledge Locations & Solutions Guide

There are a total of six Vaults of Forbidden Knowledge to find and open in Hell is Us. Each one has very good loot inside, some of the best weapons, relics and glyphs can be found within the vaults.

In order to open the vaults, you normally need to research a certain amount of items, but you can skip that part out by watching this video for the solutions. The code is made up of symbols, use the wheels to match what's in the video to open the door.

None of the Vaults of Forbidden Knowledge are missable and you can open them as soon as you reach the area it's in, or later on if you missed it.

All Vaults of Forbidden Knowledge Codes & Locations in Hell is Us:

[0:00] Sendra Forest Vault
[1:37] Acasa Marshes Vault
[3:39] Vyssa Hills Vault
[5:15] Lake Cynon Vault
[6:25] Marastan Vault
[8:13] Jeljin Vault

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