Here is the full list of all 20 Spooky Dwellers - there are Collector's Edition achievements.
Complete 10 Match 3 levels
Complete 35 Match 3 levels
Complete all the Match 3 levels
Get your first Gold Cup
Get 5 Gold Cups
Get 25 Gold Cups
Get 60 Gold Cups
Get 90 Gold Cups
Get 150 Gold Cups
Complete all the Hidden Objects minigames
Complete all the Swap Puzzles minigames
Complete all the Coin Collector minigames
Complete all the Table of Memory minigames
Complete all the Higher or Lower minigames
Reach the standard ending
Reach the CE ending
Activate a card to trap Mr. Pumpkin
Get a "Perfect" Coin Collector level
Get a "Perfect" in all the Coin Collector levels
Buy all the items for the Terrace