Here is the full list of all 20 The Town of Light achievements. It takes around 8-10 hours to unlock all of the achievements on Windows.
Unlock Chapter 5
Unlock Chapter 6a
Unlock Chapter 6b
Unlock Chapter 12c
Unlock Chapter 12a
Unlock Chapter 12b
Unlock Chapter 12d
Unlock Final chapter
They used to work in the garden
Finally, a place to rest
Someone is freshen
Taste of Tuscany wine
Life thrives there
A secret place under the massive wall
They try to hold the pieces together
He still has a name
Find all the drawings
You know the truth
Find the first part of Renée's diary
Find all of Renée's diary entries