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.
Navigated to the buried treasure.
Completed Delores's Flashback.
Listened to 100 Voicemail messages.
Read 100 books in the library.
Completed Franklin's Flashback.
Visited every floor in the hotel.
Used Ransome's Itch Cream.
Part Three: The Arrest.
Read all the Thimbleweed Nickel newspapers.
Completed Ransome's Flashback.
Pushed the circus mime over.
Escaped from the sewers.
Part Two: The Body
Part One: The Meeting.
Catch the killer.
Begin Part Four.
Get an alive character into the Hotel penthouse.
Begin Part Five.
Begin Part Six.
Begin Part Seven.
Begin Part Eight.
Begin Part Nine.
Complete the game in casual mode.
Complete the game in hard mode.
Stay for all the credits.
Collect 25 specks of dust.
Blow up the Mansion.
Collect 50 specks of dust.
Make everyone cry about their life.
Grow Leonard's plant to superhuman size.
Collect 75 specks of dust.
Get Ransome's bad ending.
Don't pick up any specks of dust.