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.
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.
Collected 25 specks of dust.
Completed Franklin's Flashback.
Visited every floor in the hotel.
Part Three: The Arrest.
Escaped from the sewers.
Completed Delores's Flashback.
Read 100 books in the library.
Completed Ransome's Flashback.
Part Two: The Body
Part One: The Meeting.
Complete the game in hard mode.
Push the circus mime over.
Read all the Thimbleweed Nickel newspapers.
Use Ransome's Itch Cream.
Blow up the Mansion.
Collect 50 specks of dust.
Listen to 100 Voicemail messages.
Make everyone cry about their life.
Navigate to the buried treasure.
Grow Leonard's plant to superhuman size.
Collect 75 specks of dust.
Don't pick up any specks of dust.