List of Scooby Doo: Unmasked trophies

Platinum
Platinum Sleuth: Zoinks! you got all the trophies in the game!

Gold:
Unmasked: complete the game, and solve the mystery of the Tome of Doom.

Scooby Dooby Doo!: Defeat the final boss with at least 10 medals remaining.

Silver:
Chinatown Closed: Complete all levels in 'Shuddery Showdown in Chinatown'

Roller Coaster Closed: Complete all levels in 'Rockin' Roller Coaster Terror'

Museum Closed: Complete all levels in 'Harum Scare'em at The Museum'

Costume Plus: Get all upgrades for the 3 playable costumes

Bronze
A Mystery to Solve: Complete 'Monsterous Fright & Magic'

Jed Rescued: Rescue Jed in 'Back to Monsterous Fright & Magic'

Mubber Knows Best: Use mubber converters at least 10 times.

Master of Disguise: Use a costume mubber converter for the first time.

3 Costumes: Get all 3 playable costumes.

Food Finder: Get all food in the game.