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