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