Here is the full list of all 24 Candle Knight achievements.
Interact with a painting for the first time.
Interact with the Merchant for the first time.
Defeat The Envoy : Child.
Solve the Book Riddle.
Defeat the Scholar and end her dream.
Visit the Hub for the first time.
Help the Clockwork Knight citizens.
Defeat the King and end his dream.
Defeat The Envoy : Rebellion.
Upgrade a weapon for the first time.
Fully upgrade the sword
Fully upgrade the shield
Obtain 4 armor pieces.
Obtain 8 armor pieces.
Find all the Zodiac Cards.
Find all the Easter Eggs.
Clear 3 platforming challenges.
Clear all platforming challenges.
Clear 3 combat challenges.
Clear all combat challenges.
Lit all the chalices.
Collect a Corpse for the first time.
Save up to 999 coins.
Obtain all Trophies