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