Here is the full list of all 34 Thimbleweed Park trophies - there are 17 bronze, 11 silver, 5 gold and 1 platinum.
Collect all trophies.
Don't pick up any specks of dust.
Complete the game in casual mode.
Get Ransome's bad ending.
Push the circus mime over.
Stay for all the credits.
Complete the game in hard mode.
Begin Part Nine.
Begin Part Eight.
Begin Part Seven.
Grow Leonard's plant to superhuman size.
Navigate to the buried treasure.
Begin Part Six.
Begin Part Five.
Get an alive character into the Hotel penthouse.
Listen to 100 Voicemail messages.
Make everyone cry about their life.
Collect 75 specks of dust.
Begin Part Four.
Catch the killer.
Blow up the Mansion.
Collect 50 specks of dust.
Read 100 books in the library.
Collect 25 specks of dust.
Complete Franklin's Flashback.
Visit every floor in the hotel.
Use Ransome's Itch Cream.
Begin Part Three.
Read all the Thimbleweed Nickel newspapers.
Escape from the sewers.
Complete Delores's Flashback.
Complete Ransome's Flashback.
Begin Part Two.
Begin Part One.