Here is the full list of all 39 9 Clues 2: The Ward achievements. It takes around 4-5 hours to unlock all of the achievements on Windows.
Find all nine Hidden Clue Symbols.
Complete the Asylum Model.
Find all fifteen Phantom Objects hidden across the game.
Finish a game of Mahjong.
Finish three games of Mahjong without using Shuffle.
Finish half of all the games of Mahjong.
Finish all games of Mahjong.
Finish the game without using a Hint.
Finish all Hidden Object Puzzles without using a Hint.
Be a hero and save lives.
Gather full information about all the characters.
Solve all Puzzles without using Skip.
Gather all nine Clues in your Journal.
Watch all the cutscenes in the game without using Skip.
Create your puppet.
Find a way to call for help.
Solve all Detective Mode scenes.
Learn about Kreuz's secret.
Find three Hidden Clue Symbols.
Make your way out.
Gather five Clues in your Journal.
Finish Zed's masterpiece.
Find three fragments of the Asylum Model.
Visit the closed ward.
Finish five Hidden Object Puzzles in under two minutes each.
Finish three Hidden Object Puzzles without using a Hint.
Fix the sprinklers.
Gather three Clues in your Journal.
Regain a clear mind.
Finish one Hidden Object Puzzle without using a Hint.
Solve three Puzzles without using Skip.
Solve five Puzzles in under two minutes each.
Find three Phantom Objects.
Disarm all booby traps.
Find a way out.
Fight your fears.
Solve your first Detective Mode scene.
View three cut scenes without using Skip.
Solve a Puzzle without using Skip.