Here is the full list of all 39 Mahjong by Microsoft (Mobile) achievements worth 1,000 gamerscore.
Won 12 Bronze Daily Challenge badges.
Won 10 Silver Daily Challenge badges.
Won 8 Gold Daily Challenge badges.
Completed every Daily Challenge in a month.
Completed at least one Daily Challenge every day for a month.
Won a Diamond Daily Challenge badge.
Completed a Puzzle Pack.
Completed 5 Expert puzzles without using a Reshuffle, Undo, or Hint.
Made 10000 matches.
Completed 4 different Expert puzzles.
Completed the same puzzle 20 times.
Completed 10 chains of 5 or more.
Played the Daily Challenge 5 days in a row.
Completed 10 Quickplay puzzles.
Completed 10 Hard puzzles without using Reshuffle, Undo, or Hint.
Completed 4 puzzles using 4 different Tile Sets.
Completed the following puzzles in sequence: 2, 4, 8, 16.
Cleared the board with Golden Tiles being the last match on the board.
Matched a pair of Lightning Tiles with only 1 move left in countdown.
Completed a Match Attack with at least 1 minute left on the timer.
Completed your first Daily Challenge.
Played your first Daily Challenge.
Matched the following tiles in sequence: N, E, S, W.
Completed a puzzle within three turns after using a reshuffle.
Completed a puzzle using the "Hint" button only twice.
Matched three identical pairs in a row.
Completed an Expert puzzle within 5 minutes.
Made 1000 matches.
Won 4 puzzles of different difficulty in a row from Easy to Expert.
Made 3 consecutive matches with flower tiles.
Matched 3 pairs of the same suit which count up or down.
Completed a Hard Puzzle.
Changed the Tile Set.
After "No More Moves," undid 10+ moves in a row then won the puzzle.
Completed a puzzle with total chains of 20 or above.
Made 100 matches.
Completed a puzzle within 3 minutes.
Completed a puzzle.
Made 5 matches within 15 seconds.