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