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The Mound: Omen of Cthulhu Achievements

Official Steam achievement definitions and latest reported global unlock rates, ordered from rarest to most common.

Total achievements25
Rarest rate0.200%
Ultra rare6
Last checkedSep 21, 2026
Delayed official data

Rates and award counts were last observed on Sep 21, 2026.

1
Long Shot

Shoot down a Bandurria mid-flight from at least 50 meters away

Ultra rare
0.200%last reported global rate
2
Too Stubborn to Die

Revive another player 50 times

Ultra rare
0.200%last reported global rate
3
Nine Guardians

Have the Woodworker craft 9 Sacred Figures

Ultra rare
0.500%last reported global rate
4
The Horrors Named

Unlock 13 pages of the Creature Codex

Ultra rare
0.600%last reported global rate
5
Like Moths to a Flame

Lure 5 creatures simultaneously using a single jar of Black Ichor

Ultra rare
0.700%last reported global rate
6
Refusing the Grave

Revive another player 30 times

Ultra rare
0.900%last reported global rate
7
Tempered by Madness

Reach Rank 30

Very rare
1.30%last reported global rate
8
Aim True

Perform 50 headshots on Y'm-bhi creatures

Very rare
3.20%last reported global rate
9
The Full Account

Recover 13 logbooks from the continent

Very rare
3.80%last reported global rate
10
One Clean Throw

Kill a Y'm-bhi with a spear headshot

Very rare
4.00%last reported global rate
11
Relics of Blasphemy

Bring back 5 new occult tools or artifacts for the galleon's shop

Very rare
4.20%last reported global rate
12
Scarred but Standing

Reach Rank 20

Very rare
4.80%last reported global rate
13
Patron of the Arts

Find 2 additional songs for the Lute Player

Rare
6.80%last reported global rate
14
Seven Willing Souls

Unlock 7 playable characters

Rare
6.80%last reported global rate
15
Pages Best Left Blank

Unlock 7 pages of the Creature Codex

Rare
7.00%last reported global rate
16
A Legendary Commission

Successfully complete a legendary mission

Rare
7.70%last reported global rate
17
The Mound

Reach The Mound

Rare
7.80%last reported global rate
18
Pulled from the Brink

Revive another player 10 times

Rare
8.40%last reported global rate
19
Records of the Lost

Recover 7 logbooks from the continent

Rare
12.9%last reported global rate
20
Just in Time

Interrupt a Y'm-bhi just as it is about to grab an ally

Rare
15.0%last reported global rate