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