Here is the full list of all 36 Grim Legends 3: The Dark City achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
Win the last fight against the Koshmaar without failing.
Finish the Fifth Memory Mirror in less than 3 minutes.
Finish the Fourth Memory Mirror in less than 3 minutes.
Finish a Hidden Object Puzzle in less than 20 seconds.
Finish the Second Memory Mirror in less than 3 minutes.
Open the gate in the Garden without making a negative.
Finish the Tutorial.
I got to the first Incarceri Stone. Made a choice. Was it enough to get rid of the Koshmaars once and for all?
Make a choice whether to fight or to deal with Koshmaar.
Finish the last minigame in the game without the skip.
Move the ladder back, forth, back and forth again!
Finish Game on Expert Difficulty.
We saved the city, and Camilla. The Koshmaar is re-imprisoned. But so is Gabriel. It is a bittersweet victory.
Finish all Hidden Object Puzzles without using the Hint button.
Play all Minigames without skipping.
Find all Collectibles.
Solomon is dead. He turned into a Maskwraith. Gabriel showed up, and we joined forces.
Win the final rune battle without an error.
I have everything I need to face the Koshmaar.
Read 30 in-game writings during your journey.
Gabriel double-crossed me, but I know where to find him now.
Finish the Third Memory Mirror in less than 3 minutes.
Solomon's hurt. I must find a cure for him.
Find half of all Collectibles.
The Koshmaar abducted a city into his realm. We gave pursuit and helped one of the Maskwraiths. After, we encountered Gabriel, and Solomon ran after him. But we were separated.
Play Chapter 1 without skipping any cutscenes.
Find 3 hidden objects within 3 seconds.
Finish the First Memory Mirror in less than 3 minutes.
Play 4 Minigames in a row without skipping.
Win a Rune Battle Minigame against a Maskwraith without an error.
Finish a Hidden Object Puzzle with less than 4 mistaps.
Finish a single Hidden Object Puzzle without using the Hint button.
Read all the newspapers at the Lichtenheim Train Station.
Play the Prologue without skipping any cutscenes.
An Incarceri Stone was stolen from the Order's Treasury. We followed a lead to the city of Lichtenheim.
Find the first Collectible.