Full list of all 33 Thimbleweed Park achievements worth 1,000 gamerscore. It takes around 8-10 hours to unlock all of the achievements on Xbox One.
Didn't pick up any specks of dust.
Completed the game in hard mode.
Grew Leonard's plant to superhuman size.
Made everyone cry about their life.
Navigated to the buried treasure.
Pushed the circus mime over.
Listened to 100 Voicemail messages.
Collected 75 specks of dust.
Collected 50 specks of dust.
Stayed for all the credits.
Completed 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.
Part Five: The Reading.
Got an alive character into the Hotel penthouse.
Part Four: The Will.
Caught the killer.
Used Ransome's Itch Cream.
Blew up the Mansion.
Collected 25 specks of dust.
Completed Franklin's Flashback.
Visited every floor in the hotel.
Part Three: The Arrest.
Read all the Thimbleweed Nickel newspapers.
Completed Ransome's Flashback.
Escaped from the sewers.
Completed Delores's Flashback.
Read 100 books in the library.
Part Two: The Body
Part One: The Meeting.