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
Beat All Levels
Defeat Typhon
Save a follower with no incorrect guesses
Save 10 Followers
Earn 500,000 Gold
Beat All Typing Levels
Defeat Echidna
Defeat the Minotaur
Defeat Lamia
Defeat Lycaon
Defeat Arachne
Use 10,000 Letters
Spell 2,500 Words
Defeat the Cyclops
Unlock 5 Treasure Chests
Defeat 100 Normal Enemies
Defeat the Hydra
Defeat the Chimera
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 word with 3 or more Special Tiles
Defeat Medusa
Spell a 7 Letter Word