Here is the full list of all 15 Demon Hunter 2: New Chapter achievements. It takes around 3-4 hours to unlock all of the achievements on Windows.
Finish 3 Hidden Object Scenes without a hint or misclick.
Complete the game.
Finish all the Minigames without skipping them.
Gather all of the collectable items.
Complete the engine Minigame without skipping.
Finish the swap Minigame.
Finish the pipes Minigame without skipping.
Complete 5 puzzles without skipping them.
Complete a Minigame puzzle in less than a minute.
Complete a Hidden Object Scene in less than a minute.
Finish the story from the TV Minigame.
Finish 3 Hidden Object Scenes in less than 10 minutes.
Find 3 hidden objects within 3 seconds.
Complete a Hidden Object Scene without a hint.
Complete a Hidden Object Scene without a misclick.