Here is the full list of all 30 God of Word achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
Reach the Max Level
Save a follower with no incorrect guesses
Earn 500,000 Gold
Beat All Levels
Defeat Typhon
Beat All Typing Levels
Defeat the Minotaur
Spell 2,500 Words
Use 10,000 Letters
Defeat Echidna
Defeat Lycaon
Defeat Lamia
Save 10 Followers
Defeat Arachne
Defeat 100 Normal Enemies
Defeat the Cyclops
Defeat the Hydra
Defeat the Chimera
Defeat the Manticore
Defeat Ladon
Unlock 5 Treasure Chests
Defeat the Calydonian Boar
Defeat the Nemean Lion
Max out an ability
Defeat the Sphinx
Defeat Cerberus
Defeat Medusa
Kill an enemy with exact damage
Spell a 7 Letter Word
Spell a word with 3 or more Special Tiles