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.
Save a follower with no incorrect guesses
Beat All Levels
Defeat Typhon
Unlock 5 Treasure Chests
Beat All Typing Levels
Defeat Echidna
Defeat the Minotaur
Save 10 Followers
Reach the Max Level
Defeat Lamia
Defeat Lycaon
Earn 500,000 Gold
Defeat Arachne
Use 10,000 Letters
Spell 2,500 Words
Defeat the Cyclops
Defeat 100 Normal Enemies
Defeat the Chimera
Defeat the Hydra
Defeat the Manticore
Defeat Ladon
Defeat the Calydonian Boar
Defeat the Nemean Lion
Max out an ability
Defeat the Sphinx
Kill an enemy with exact damage
Defeat Cerberus
Spell a 7 Letter Word
Spell a word with 3 or more Special Tiles
Defeat Medusa