Here is the full list of all 23 The Peanuts Movie: Snoopy's Grand Adventure trophies - there are 11 bronze, 2 silver, 9 gold and 1 platinum.
Find all the kids
Complete all Melody Chateau levels
Complete all Skies of Paris levels
Collect all Jelly Beans in a single level
Complete all Parisian Underground levels
Unlock all Costumes
Unlock the Detective Costume
Unlock the Joe Cool Costume
Complete all Peppermint Jungle levels
Defeat The Mask Boss without being hit
Complete all Lunar Surface levels
Break through a wall as the Masked Marvel
Unlock the Masked Marvel Costume
Unlock the Flying Ace Costume
Complete all Temple of Bunnies levels
Jump on three enemies without touching the ground
Unlock the Astronaut Costume
Have a second player activate a Woodstock trigger
Unlock the Beagle Scout Costume
Hover as normal Snoopy for more than 5 seconds
Finish a level
Get all trophies
Collect all kids objects