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Hollow Cocoon achievements, rarest first.
Every achievement in Hollow Cocoon, ranked by how many Steam players have unlocked it. Global completion rates from Steam, refreshed daily.
The rarest achievement
A hidden achievement
3.1%
of players
- Achievements
- 11
- Rarest
- 3.1%
- Ultra rare (under 5%)
- 1
- Average completion
- 24%
1
HolometabolismHidden
Hidden achievement. Description revealed on unlock.
3.1%
2
Game Master
Complete the 10 yen game 50 times.
5.2%
3
You're my momHidden
Hidden achievement. Description revealed on unlock.
12%
4
Collector
Get all files.
18%
5
UFOHidden
Hidden achievement. Description revealed on unlock.
20%
6
Mary's phone callHidden
Hidden achievement. Description revealed on unlock.
21%
7
Chicken Strikes BackHidden
Hidden achievement. Description revealed on unlock.
22%
8
MayuhimeHidden
Hidden achievement. Description revealed on unlock.
24%
9
Dirty right handHidden
Hidden achievement. Description revealed on unlock.
36%
10
Descendant of a xenomorphHidden
Hidden achievement. Description revealed on unlock.
50%
11
HumanHidden
Hidden achievement. Description revealed on unlock.
54%
Percentages are Steam's global unlock rates across all players who own Hollow Cocoon, refreshed daily. Under 5% is marked in the lit blue.