Here is the full list of all 29 Creepy Castle achievements.
MMMMMMMMysterious things happen on the title screen...
Excel at some duels!
Eat some food.
Eat some damage.
Fight some enemies!
Complete Scenario 1: Creepy Castle.
Complete Scenario 2: Ghostly Mystery.
Complete Scenario 2B: Lost.
Complete Scenario 4: Due Exaltation.
Get to know the colorful locals of a big city!
Eat a lot of food.
Eat an enormous amount of food.
Fight a lot of enemies!
Fight an enormous amount of enemies!
Excel at a lot of duels!
Excel at an enormous amount of duels!
Eat a lot of damage.
Eat an enormous amount of damage.
Find a special guest hidden deep in The City of Light...
Find a special guest hidden deep in the Ghost Palace...
Find a special guest hidden deep in the Depths...
Find a special guest hidden deep in space...
Defeat the ultimate opponent...
Complete Scenario 5: The Final Fist.
Complete Scenario 3: Depth.