Here is the full list of all 14 Tower Words achievements.
Scored 100 on Endless Mode!
Completed 40 levels!
Completed 35 levels!
Completed 30 levels!
Completed 25 levels!
Get a word score of 800!
Completed 20 levels!
Completed 15 levels!
Scored 50 on Endless Mode!
Got a word score of 400!
Completed 10 levels!
Got a word score of 200!
Completed 5 levels!
Get a word score of 1600!