Here is the full list of all 33 Thimbleweed Park achievements.
Collected 75 specks of dust.
Collect 50 specks of dust.
Collect 25 specks of dust.
Escape from the sewers.
Complete the game in casual mode.
Got Ransome's bad ending.
Stayed for all the credits.
Didn't pick up any specks of dust.
Complete the game in hard mode.
Part Nine: The Deleting.
Part Eight: The Escape.
Part Seven: The Madness.
Navigated to the buried treasure.
Grew Leonard's plant to superhuman size.
Part Six: The Factory.
Begin Part Five.
Get an alive character into the Hotel penthouse.
Used Ransome's Itch Cream.
Begin Part Four.
Catch the killer.
Listen to 100 Voicemail messages.
Make everyone cry about their life.
Blew up the Mansion.
Complete Franklin's Flashback.
Visited every floor in the hotel.
Begin Part Three.
Read all the Thimbleweed Nickel newspapers.
Read 100 books in the library.
Pushed the circus mime over.
Complete Delores's Flashback.
Complete Ransome's Flashback.
Begin Part Two.
Begin Part One.