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