Here is the full list of all 40 Chrono Ark achievements.
The most important game element
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Clear the game on Expert Difficulty.
Clear the game with Azar.
Clear the game with Joey.
Clear the game with Lian.
Clear the game with Miss Chain.
Clear the game with Pressel.
Clear the game with Trisha
Clear the game with Hein.
Clear the game with Iron Heart
Clear the game with Silverstein.
Clear the game with Sizz.
Clear the game with Charon.
Clear the game with Phoenix.
Clear the game with Narhan.
Clear the game with Huz.
Clear the game with Selena & Helia.
Clear the game with Johan
Clear the game with Ilya
Clear the game with Leryn.
Challenge Blood Mist 1
Challenge Blood Mist 2
Challenge Blood Mist 3
Challenge Blood Mist 4
Clear Blood Mist 4