Here is the full list of all 40 Curse Crackers: For Whom the Belle Toils achievements.
Clear the carnival.
Clear the ruins.
Clear the swamp.
Clear the library.
Clear the astral area.
Complete a boss without being hit.
Get 999 coins.
Rescue a mage.
Collect a lost book.
Collect an Oathsword.
Collect a lost rose.
Complete an Arcade run.
Beat a boss with 1 HP.
Get an A in Arcade.
Rescue all the petrified mages.
Earn your first medal.
Earn 20 speed medals.
Earn 20 longshot medals.
Earn 20 target medals.
Solve Sariah's problem.
Help Genevive with her future.
Help Willow make her move.
Remember to rescue Clyde.
Help Yana make some friends.
Earn the right to apply for knighthood.
Help Kailani burn some of that endless energy.
Help Barax move forward.
Reconcile with Bonnie.
Help Astrid complete her observatory.
Assist Elinore with filling an order.
Help Fione learn about the world below.
Open a door better left closed.
Earn Trenton's approval for knighthood.
Earn Lyle's approval for knighthood.
Collect all the lost souls for Riley.
Learned one of Claire's recipes.
Learn all of Claire's recipes.
Won a game of cards.
Revived Oathbind.
Discover a secret.