There are 10 of them
Ancient Secrets is a collection set with 10 entries. The number comes from a player working through the set in the Steam thread "Ancient secrets/vault need help", who was sitting on 9 out of 10 and asking where the last one was.
What that player had already logged:
| Secret | Notes |
|---|---|
| The rocket ship | Named directly as one of the finds |
| Notes | Several, counted as separate entries |
| Two radios | Two distinct radio pickups |
That accounts for most of the set but not all of it, and no one has posted a complete numbered list. We are not going to invent the missing rows to fill out the table — if you have the other entries logged, that is genuinely new information.
The second vault door — what almost everyone is missing
The answer that unstuck the thread:
Take the elevator down, and inside the vault there is a second door. Behind it is another recording.
If you are stuck at 9/10, this is the first thing to check. People ride the elevator down, clear the room they land in, register that as "the vault", and leave without noticing there is another door in there.
Ancient facility, vault, ancient ruins — the same place
Getting there at all means riding the elevator down — see deep layers.
The ancient facility and the vault are the same piece of content, which is why searches for both land here. The location name that shows up in Steam threads is ancient ruins — a separate thread about an invisible crushing ball on the ancient ruins uses that name for the same area.
How you get in: you push the main questline forward until the game tells you to go. There is no shortcut, no key item to farm, and no way to open it early. The thread's answer was blunt about it — progress the story until you are prompted.
Two bugs that made this area confusing
The host-only door bug
This one has a real contradiction in it and we would rather show you the contradiction than pick a side.
What the patch notes say. Patch 1.03, dated 9 August 2026, lists a fix for "a bunker door in the ancient facilities could not be opened by clients." That is an official first-party source saying the problem was fixed.
What players said afterwards. The Steam thread post claiming "only the host can open it" is dated 10 August — the day after 1.03 shipped. On Reddit, a reply in The VAULT puts it the same way, then edits itself:
"Only session owner can open it. Apparently this has been patched."
How to read that. The restriction was real. The developer says it is fixed. At least one player report of the restriction lands after the fix date, which usually means one of two things: the player was on an older build, or the fix did not cover every case.
Practical version: if a client cannot open the door in your session, check that everyone is fully updated before assuming it is still broken — and if it still happens on current builds, that is a bug report worth filing, not a rule of the game.
The invisible boulder
Worth knowing if you have been crushed by nothing. A separate thread, invisible crushing ball on ancient ruins, reported a rolling boulder trap that clients could not see — only the host could, and it became visible to everyone else only after the host died.
Patch 1.02 (9 August 2026) lists the fix: "Fixed a bug where the rolling boulder trap was invisible to clients." If you played the ruins in the first two days after launch and could not work out what killed you, that was it.
The vault is the end of the story — for now
The chain that leads here runs through Quill.
Getting the vault open is, right now, the end of the line. Players who finish it report running out of questline and hitting a dead end rather than a conclusion — the same complaint shows up in threads about the story stopping without warning.
That is not a mistake on your end. The developers have said more is coming: their public roadmap puts a new questline in the October Halloween update, alongside opening the Outpost's third floor. The roadmap is explicit that these are monthly goals, not fixed dates.
What is not confirmed
- The full 10-item list. Rocket ship, notes and two radios are confirmed by a player who had 9 of 10. The rest have not been posted anywhere we could find
- Whether the notes count individually. "Several notes" could be one collection entry or several — the thread does not break it down
- What the recordings say. Nobody has transcribed them publicly
- Whether the two radios connect to the radio station. A separate Reddit thread mentions a radio station as a location outside the Outpost. The link is suggestive, not established — treat it as a lead
- Whether the client-side door bug is fully gone. See the timeline above