Here is the full list of all 15 Lovecraft Quest - there are A Comix Game achievements.
Gather all the artifacts
Start the story from the beginning
Wake up Cthulhu
Find an exit from the maze
Perish under a cave-in
Open the treasury door
Solve the chess knight puzzle
Crack open the mimic chest
Kill Dagon
Create order where there was chaos before
Escape from a Shoggoth
Fall into a bottomless pit
Get eaten by a Shoggoth
Encounter Dagon
Find the secret ending