Here is the full list of all 21 One Small Fire At A Time achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
Finish with An Alternate Ending
Finish Chapter 10.5
Find the Owner of the Glass Slipper
Obtain the True Ending
Finish Chapter 15
Finish Chapter 14
Finish Chapter 13
Finish Chapter 12
Finish Chapter 11
Finish Chapter 10
Finish Chapter 9
Finish Chapter 8
Finish Chapter 7
Finish Chapter 6
Finish Chapter 5
Finish Chapter 4
Finish Chapter 3
Finish Chapter 2
Finish Chapter 1