The Mound: Omen of Cthulhu Achievements - All 25 and the Ten Named

The Mound: Omen of Cthulhu tracks 25 achievements on Steam. Ten of them are published with names in the store data, and the game also carries Steam Trading Cards, Cloud saves and Family Sharing alongside them.

How many achievements the game tracks

The count is fixed by the listing: 25. That is the same figure shown on the Steam store page and in the store data behind it, and it does not vary by platform because only one platform is listed.

Item	Published value
Achievements	25 total
Named in the store data	10
Hidden among the named ten	0
Trading cards	Tagged on the listing
Cloud saves	Tagged

Steam exposes a highlighted subset of an achievement list rather than the whole table, which is why the count and the names on this page come from two different places: the store page gives the 25, and the store data gives ten of the names. Neither source publishes unlock conditions for any achievement.

The ten names the store data publishes

The subset that Steam exposes with names reads like a progression path through the expedition, from surviving the first drop to a full account of what the party found.

• Proven in the Field
• Scarred but Standing
• Tempered by Madness
• Nine Guardians
• Records of the Lost
• The Full Account
• Patron of the Arts
• Relics of Blasphemy
• Pages Best Left Blank
• The Horrors Named

Several of those names line up with systems the store text describes: madness, recovered records and the entities the party meets. That is a reading of the names, not a published mapping, so no unlock condition is stated here.

The other fifteen are unnamed in public data

Fifteen of the 25 achievements have no readable name in the store data we captured. Steam exposes a highlighted subset rather than the full table, and it does not publish unlock conditions, point values or descriptions for either the named ten or the remaining fifteen.

Because there is no public list, this page does not guess at the missing names. Anything that claimed to name all 25 would be working from a source outside the official listing.

That limit is worth stating plainly for anyone planning a full clear. The public data stops at the highlighted ten, so the remaining fifteen names and their unlock conditions cannot be confirmed here without moving to a source the store page does not control, and this site only writes from the official listing and the store data behind it.

Where to go next

The rating scheme that sits alongside the achievements is broken down on Features, the co-op setup is on How It Plays, and the launch facts are on Launch & Demo.

Together those pages use the same store data this one does, with no third-party sources added.