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.
Open comic ending of the game.
Open glossary.
View a map of the World.
Finish the game of death.
Take the ruby
Finish the game.
Finish the game without dying.
Take the crown
Select the alchemist
Take the knife
Romance with Gerda
Help the wounded
Starting a game for the first time.