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