Here is the full list of all 13 Avalon Legends Solitaire achievements.
Earned for completing the game!
Earned for finding all Magic Cards
Earned for finding 26 Magic Cards
Earned for completing seven stages
Earned for 30 perfect finishes
Earned for finding 5 Magic Cards
Earned for 10 perfect finishes
Earned for completing the first stage
Earned for making a combo of 22 or more
Earned for making a combo of 30 or more
Earned for making a combo of 14 or more
Earned for making a combo of 6 or more
Earned for a perfect finish