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