Here is the full list of all 44 Heavens Vault achievements. It takes around 40-50 hours to unlock all of the achievements on Windows.
A moon of deals and spices
A new friend!
I lost my friend.
Learn 30 Words
Pay your last respects
Meet a friendly scholar
Meet a mechanicist
Meet a bartender
Meet a thief
Home
Learn 20 Words
Completed 3 Translations
Completed 5 Translations
Completed 10 Translations
Pilgrims are welcome
An ancient voice
Learn 1 Word
Learn 3 Words
Learn 5 Words
Learn 10 Words
Completed 1 Translation
A moon of fresh air and pigs
Another robot to add to the collection...
All things must come to an end...
Leave Everything Behind
Leave the Past Behind
An ancient Empress lies buried...
Things will never be the same again...
A friend has found a place to hide.
A spot of burglary
Bring a new student to the University
Meet an injured labourer
Meet a survivor
A name from the past...
What is this place...?
New game plus!
Learn 50 Words
Completed 20 Translations
Completed 30 Translations
It's only business...
Discover something priceless - and keep it secret
Seal the University
The pigs have something to say after all...
A legend from the Old Sea