Here is the full list of all 34 In Verbis Virtus achievements.
Kill 100 critters.
Kill 25 critters.
Find an ancient document.
Get 10 documents in your journal.
Get 20 documents in your journal.
Get 30 documents in your journal.
Get all documents in your journal.
Kill 500 critters.
Solve the chessboard secret puzzle.
Create a healing pool.
Freeze two neighboring fonts.
Kill a Saevar.
Kill a Shar-Seth.
Kill a Rak'Emesh.
Defeat the Winged Glory.
Kill a Will-o'-the-wisp.
Save the game 50 times.