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