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.
Collect 75 specks of dust.
Stay for all the credits.
Complete the game in hard mode.
Get Ransome's bad ending.
Begin Part Nine.
Collect 50 specks of dust.
Begin Part Eight.
Begin Part Seven.
Make everyone cry about their life.
Grow Leonard's plant to superhuman size.
Begin Part Six.
Begin Part Five.
Navigate to the buried treasure.
Get an alive character into the Hotel penthouse.
Begin Part Four.
Catch the killer.
Collect 25 specks of dust.
Complete Franklin's Flashback.
Visit every floor in the hotel.
Blow up the Mansion.
Use Ransome's Itch Cream.
Begin Part Three.
Complete Delores's Flashback.
Listen to 100 Voicemail messages.
Read 100 books in the library.
Read all the Thimbleweed Nickel newspapers.
Escape from the sewers.
Complete Ransome's Flashback.
Push the circus mime over.
Begin Part Two.
Begin Part One.