Full list of all 30 Maid of Sker achievements.
The base game contains 20 achievements, and there is 1 DLC pack containing 10 achievements.
Use all Phonic Modulator charges
Play all musical instruments in game
Thomas gives Elisabeth the four brass music cylinders
Don't use the Phonic Modulator
Find all the musical dolls
Find all notes
Interactive with the Whale sculpture
Visit every location and room in the Sker Mansion and grounds
Listen to all Gramophone recordings
Listen to all Speaker Phone messages
Bump into furniture 250 times
Ring all ground floor bells
Pet The Dog
Hold your breathe more than 50 times
End up coughing 10 times
Ignore Elisabeth's calls
If Thomas plays the four pieces of the Counter Song on the Harmonium
Complete the game on hard setting
Complete the game saving one time or less
Don't get hit by the enemies at all in the game
Finish any challenge with less than 10 kills
Complete Challenge "Nightmare at the Hotel"
Receive an "A*" Grade in "Nightmare at the Hotel"
Finish any challenge with more than 150 headshots
Receive an "A*" Grade in "The Long Night"
Complete Challenge "In Darkness"
Receive an "A*" Grade in "In Darkness"
Receive an "A*" Grade in "Axe of Kindness"
Complete Challenge "Axe of Kindness"
Complete Challenge "The Long Night"