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.
Find all of Renée's diary entries
You know the truth
Find all the drawings
He still has a name
They try to hold the pieces together
A secret place under the massive wall
Life thrives there
Taste of Tuscany wine
Unlock Chapter 12d
Unlock Chapter 12c
Unlock Chapter 6a
Unlock Chapter 12a
Unlock Final chapter
Someone is freshen
They used to work in the garden
Finally, a place to rest
Unlock Chapter 12b
Unlock Chapter 6b
Unlock Chapter 5
Find the first part of Renée's diary