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.
Complete the game.
Finish all the Minigames without skipping them.
Complete the engine Minigame without skipping.
Complete a Hidden Object Scene in less than a minute.
Finish 3 Hidden Object Scenes without a hint or misclick.
Finish 3 Hidden Object Scenes in less than 10 minutes.
Find 3 hidden objects within 3 seconds.
Finish the swap Minigame.
Finish the pipes Minigame without skipping.
Complete 5 puzzles without skipping them.
Complete a Hidden Object Scene without a misclick.
Finish the story from the TV Minigame.
Complete a Minigame puzzle in less than a minute.
Complete a Hidden Object Scene without a hint.
Gather all of the collectable items.