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The Stone of Madness achievements, rarest first.
Every achievement in The Stone of Madness, ranked by how many Steam players have unlocked it. Global completion rates from Steam, refreshed daily.
The rarest achievement
The Stone of Madness
1.4%
of players
- Achievements
- 41
- Rarest
- 1.4%
- Ultra rare (under 5%)
- 7
- Average completion
- 14%
1
The Stone of Madness
Unlock all achievements
1.4%
2
Secrets and Truth
Open all the Chests of Saint George in Campaign 1
2.4%
3
Secrets and Freedom
Open all the Chests of Saint George in Campaign 2
2.6%
4
Per Aspera ad Astra
Unlock all skills during a single Campaign
3.5%
5
Pacifist
Complete a Campaign without killing anyone
3.6%
6
Karnaca Style
Find a macabre usage for the Flies spell
3.7%
7
The Face of Madness
Witness the scourge of madness
3.8%
8
The Manhattan Clan
Use Possession with 5 Gargoyles
5.0%
9
Clucking to the choir
Preach to a feathered congregation
5.0%
10
Black Magic
Cast Goetia on a poor soul
5.5%
11
Who Needs a Cardboard Box
Unlock all of Amelia’s skills during a Campaign
5.7%
12
Simple headology
Unlock all of Agnes’s skills during a Campaign
5.9%
13
Beware the quiet man
Unlock all of Eduardo’s skills during a Campaign
6.1%
14
A time of darkness, a world of fear
Cast a spell while possessing a gargoyle
6.9%
15
Despair
Suffer 3 Shocks with the same character, on the same Campaign
7.2%
16
A Run for the Gates
Complete Chapter 4 of the Gate of St Jerome Campaign
7.4%
17
Hope
Finish Campaign 2 - The Gate of Saint Jerome Campaign
7.4%
18
Swiss Army Knife
Unlock all of Leonora’s skills during a Campaign
7.9%
19
Knowledge Is Perfection
Unlock all of Alfredo’s skills during a Campaign
8.0%
20
Trickshot
Activate a switch from afar using a gun
8.3%
21
A Talk with the Dead
Complete Chapter 3 of the Gate of St Jerome Campaign
8.4%
22
A Scheme Brought to Light
Complete Chapter 4 of the Corrupt Hand of the Church Campaign
8.5%
23
Truth
Finish Campaign 1 - The Corrupt Hand of the Church
8.5%
24
In Times of Need...
Steal supplies during the night 3 times
9.0%
25
A Cure in the Nick of Time
Complete Chapter 3 of the Corrupt Hand of the Church Campaign
9.5%
26
A Dangerous Encounter
Complete Chapter 2 of the Gate of St Jerome Campaign
9.8%
27
The Exorcist
Exorcise 3 Animas using the Power of Faith
11%
28
A Hunt for Secrets
Complete Chapter 1 of the Gate of St Jerome Campaign
12%
29
A Gruesome Discovery
Complete Chapter 2 of the Corrupt Hand of the Church Campaign
12%
30
A sin in a haystack
Complete Chapter 1 of the Corrupt Hand of the Church Campaign
13%
31
The Poor Soul’s Wish
Ask for help from the Man in the Hat
15%
32
Vow of poverty
Use Pickpocket 5 times
15%
33
Bridge four
Build four plank bridges
23%
34
Eggspensive
Exchange an egg for information
23%
35
Turmoil
Make a loud noise to create some panic
27%
36
A terrible fate
Pray to Saint Dymphna
27%
37
The Sleep of Reason
Suffer a Shock
29%
38
A Finding Most Strange
Finish the Prologue
35%
39
Healing for the soul
Play the violin during the night
51%
40
The Game Is Afoot
Investigate 3 Clues
58%
41
Subtlety
Use knockout 3 times
62%
Percentages are Steam's global unlock rates across all players who own The Stone of Madness, refreshed daily. Under 5% is marked in the lit blue.