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