Full list of all 20 Microsoft Mahjong achievements worth 200 gamerscore. It takes around 3-4 hours to unlock all of the achievements on Windows Phone.
Achievements they've won
Achievements they've not won
Complete an expert puzzle in five minutes or less.
Complete any puzzle without using Undo.
Complete your first puzzle on your phone.
Match 20 pairs of tiles in a row where all 20 pairs are unique.
Complete your first hard puzzle on your phone.
Try out a different theme on your phone.
Complete the same puzzle 20 times.
Win 10 games of Mahjong in a row.
After reaching "No More Moves", undo at least 10 moves in a row and then complete the puzzle.
Match 3 sets of wild tiles in a row.
Complete the Dragon puzzle 15 times.
Complete four different puzzles in the easy category.
Complete four different puzzles in the medium category.
Complete four different puzzles in the hard category.
Complete any puzzle in 2 minutes or less.
Earn 10 Medals total across a Windows 8 device and your phone.
Earn 20 Medals total across a Windows 8 device and your phone.
Play 1,000 Mahjong Games or Begin a game on a Windows 8 device and finish it on your phone.
Complete 100 puzzles.
Complete a puzzle on your phone with the "Show available tiles" option turned on.