Here is the full list of all 13 The Lords of the Earth Flame achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Starting a game for the first time.
Open glossary.
Finish the game.
View a map of the World.
Finish the game of death.
Finish the game without dying.
Open comic ending of the game.
Take the ruby
Take the knife
Select the alchemist
Take the crown
Help the wounded
Romance with Gerda