Here is the full list of all 20 Regency Solitaire II achievements.
Finish the Collector’s Edition story
Finish Collector’s Edition chapter 6, Hattie's Millinery
Save up 50000 gold without spending it.
Beat the game in Normal mode.
Get a 5x multiplier.
Purchase all of the garden and costume upgrades.
Use all 6 powerups in a single hand.
Find a seashell.
Fill up the fan with wildcards/jokers.
Click the More Games button
Reach chapter 6, set in Scotland
Win 6500 gold in a single chapter.
Make a combo of 20 or higher.
Get 10 perfect hands in a chapter.
Win 5000 gold in a single chapter.
Earn 20 stars in a chapter.
Get a 2x multiplier.
Make your first combo.
Make a combo of 35 or higher.
Beat the main game in Hard mode.