Here is the full list of all 68 WordTactics achievements.
You spelled your very first word.
Complete your first game.
Spell 50 words.
Spell 250 words.
Spell 500 words.
Spell 1000 words.
Score 1000 points in a short game.
Score 2000 points in a short game.
Score 3000 points in a short or medium game.
Score 4000 points in a short or medium game.
Score 5000 points in a short, medium, or long game.
Score 6000 points in a short, medium or long game.
Score 7000 points in a short, medium or long game.
Score 8000 poitns in a short, medium or long game.
Score a word worth 100 points or more.
Score a word worth 200 points or more.
Score a word worth 300 points or more.
Score a word worth 400 points or more.
Reach level 10.
Reach level 15.
Reach level 18.
Reach level 20.
Spell a seven letter word.
Spell an eight letter word.
Spell a nine letter word.
Spell a ten letter word.
Score in the top 50% on a score board.
Score in the top 25% on a score board.
Score in the top 10% on a score board.
Complete a game with no two letter words and at least 2000 points.
Complete a game with no three letter words and at least 2000 points.
Complete a game with no four letter words and at least 2000 points.
Complete a game with no five letter words and at least 2000 points.
Complete a game scoring at least 2000 points in more than 90 minutes.
Complete a game scoring at least 2000 points in less than 40 minutes.
Complete a game scoring at least 2000 points in less than 30 minutes.
Complete a game scoring at least 2000 points in less than 20 minutes.
Beat one of your friend's game high scores.
Beat the game high scores of all of your friends.
Lose your position atop the game scoreboard of your friends.
Beat the word high scores of all of your friends.
Spell a dirty word.
Spell a word with two Zs.
Spell a word with two Vs.
Spell a word with two Js.
Spell a word with at least five letters that is a palindrome.
Twas brilling and the slithy toves did gyre and gimble in the wabe...
Spell a word with a Q, but not a U.
Spell the name of the game.
Attempt to score 50 invalid words.
Have two question marks in your input tray.
Beat the developer at his own game.
Spell a word with more vowels than consonants, and more than three letters.
Spell a word with more than seven letters, but worth less than 50 points.
Spell the same word twice in a game.
Destroy a rare letter tile with an acid tile.
Spell a seven letter word using the tiles around a single letter.
Clear your grid during or after level 9.
Clear your grid during or after level 13.
Complete a game with less than six non-stone and non-wood tiles in the grid.
Complete a game with less than six non-stone tiles in the grid.
Destroy at least four wood tiles with explosive tiles in a single word.
Destroy at least seven wood tiles with explosive tiles in a single word.
Destroy no tiles with an explosive tile (that were not used in the word).
Complete a game with no vowels (including 'Y' and '?') in the grid.
Spell a word with two Ks.
Spell a word with two Xs.
Spell a word with two Ws.