Here is the full list of all 20 Canfield Solitaire Collection achievements.
Win a game of "Superior Canfield"
Win a game of "Rainbow"
Win a game of "Falcon"
Win a game of "Canfield"
Win a game of "Duke"
Win a game of "Duchess"
Win a game of "Coyote"
Win a game of "Storehouse"
Win a game of "Double Canfield"
Win a game of "Canfield (Easy)"
Win a game of "Wings"
Win a game of "Eagle Wing"
Win a game of "Gate"
Win a game of "Beehive"
Win a game of "American Toad"
Win a game of "Acme"
Win a game of "Chameleon"
Win a game of "Little Gate"
Win a game of "Selective Canfield"
Win a game of "Variegated Canfield"