Full list of all 20 AlphaJax achievements worth 200 gamerscore. It takes around 3-4 hours to unlock all of the achievements on Windows.
Play 50 moves in all your games.
Play 100 moves in all your games.
Play 200 moves in all your games.
Win a game.
Win 10 games.
Play 10 games at the same time.
Create a new skill match game.
Create a new random game.
Rematch a player that you've lost against.
Complete a game with no tile remaining.
Score two Triple Letter Bonus Tiles with a single word.
Complete a game with at least 300 points.
Score a word that is worth at least 100 points.
Place a 10 points letter on a Triple Letter bonus tile.
Be the first of a game to use a Triple Word Bonus Tile.
After your first ten words, have an average word scoring equal or better than 20.
Win a game with at least twice the points of your opponent.
Place the seven letters of your rack in a single move.
Win 5 games in a row.
Place the word ALPHAJAX on a board.