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