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