Full list of all 35 Underground Blossom achievements. It takes around 3-4 hours to unlock all of the achievements in the base game on Windows.
The base game contains 34 achievements, and there is 1 DLC pack containing 1 achievements.
Crib Station - 4
Sorrow Cross - 3
School Street - 3
Bird Bridge Station - 3
Child Lane - 3
School Street - 4
Bird Bridge Station - 4
Soul Street - 3
Crib Station - 3
The Lake - 4
Soul Street - 4
Child Lane - 4
The Lake - 1
The Lake - 2
The Lake - 3
Soul Street - 1
Soul Street - 2
Sorrow Cross - 1
Sorrow Cross - 2
Bird Bridge Station - 1
Bird Bridge Station - 2
School Street - 1
School Street - 2
Child Lane - 1
Child Lane - 2
Crib Station - 1
Crib Station - 2
Sorrow Cross - 4
Underground - 1
Underground - 2
Underground - 3
Underground - 4
Underground - 5
Underground - 6
The Lab - 1