Here is the full list of all 41 The Darkest Tales achievements.
Use a teleport mirror to go back.
Defeat a porcupine tank while it has its shield up.
Unlock the berserk form.
Defeat Merlin the dragon.
Defeat all the phantoms in the castle.
End your love story.
Unlock the greatsword.
Unlock the knight armor.
Leave the fish woman speechless.
Unlock the harpoon.
Defeat SCIENCE!
Stop and fight during the speed test.
Unlock the spear.
Fulfill all the Jinn's wishes.
Defeat the kid who wouldn't grow up.
Unlock the boomerang.
Defeat the pirate captain and her crew.
Defeat the fairy queen.
Stitch up your wounds 42 times.
Unlock the axe.
Unlock the pirate suit.
Run away from the king and his giant wife.
Unlock the bow.
Equip your first skill!
Defeat an enemy while hanging from a wall.
Defeat the bloodthirsty girl.
Explore the cave under the bed.
Unlock the swords.
Unlock the hunter armor.
Lose during the tutorial.
Press
Hit a wolf key six times without touching the ground.
Complete the first level without skipping any cutscenes.
Use the bats as a flying bridge.
Dodge 9 lightnings at the last possible moment.
Defeat 9 zombies by offering them some coffee.
Use your bow to defeat a zombie egg.
Cut 33 poisonous apples on the fly!
Listen to the fish woman's entire song.
Defeat all the rubber duck mini-bosses.
Unlock the shotgun.