Where are the Hell Is Us Vaults of Forbidden Knowledge? There are more mysteries than you can shake a stick at in Hell Is Us—everyone needs something, there is seldom a door that isn’t already locked, and occasionally, you’ll get a lead on a special vault that contains, well, forbidden knowledge.
Knowledge is power in Hell Is Us, but you’re going to have to work for it. For instance, knowing the Vitalis house code gives you access to the blacksmith, allowing you to upgrade your weapons. Vaults of Forbidden Knowledge are another source of knowledge and power, and we have all the information you need here if you want to go hunting.
All Hell Is Us Vaults of Forbidden Knowledge
Once you complete enough research in a certain area, you receive a lead on a vault of Forbidden Knowledge. Finding these leads is fairly simple, but without the code, you’re out of luck. We have every rune listed above and a table of all the information if you want to skip past the research phase and access the vault riches right now.
Here is every Vault of Forbidden Knowledge, its location, and the unlock code:
| Vault | Location | Code |
| Acasa Marshes | Inside the ON camp, inside a cave | Rage > Ecstacy > Terror > Grief |
| Jeljin | Beneath the archaeological digsite | Grief > Loathing > Vigilance > Terror |
| Lake Cynon | On the far right edge of the coastline | Vigilance > Grief > Loathing > Ecstacy |
| Marastan | Small island behind the ruins in an underground passage | Amazement > Vigilance > Admiration > Loathing |
| Senedra Forest | Upper woods in a cave near the OMSIF encampment | Terror > Admiration > Rage > Amazement |
| Vyssa Hills | Inside the second level of the waterfall | Admiration > Amazement > Ecstacy > Rage |
Now that you know how to access all of the Hell Is Us Vaults of Forbidden Knowledge, you can get on with trying to save the world. Closing Hell Is Us Timeloops is vital in ensuring the horrors don’t return, and just in case they do, our guide on mastering the healing pulse should see you right.
