Here is the full list of all 12 Wailing Heights achievements.
Encore!
We are Deadbeats!
Why can't I understand this zombie?
Found the book, lost your body.
You have successfully completed the tutorial.
You exchanged all the ball talk.
Good hunting. You found all extras in the game.
You found all the limericks!
You're a mean vampire
Ordered everything from the Zombie Shop.
Zombie talk at the water fountain.
Exhausted your interrogation techniques.