Successfully complete one of the following tasks to get a trophy:

Half the journey (Bronze): Complete all stages in A to D.
Rock bottom (Bronze): Fall 100 times while playing stages.
Flyin' high (Bronze): Leap 100 times while playing stages.
Take a hike (Bronze): Take 10,000 steps while playing stages.
ShadoW (Bronze): Collect 500 echoes.
echochrome (Bronze): Complete 100 stages in any mode.
Gimme five (Bronze): Upload five stages.
Traversal (Silver): Complete all stages in A to G.
Total traversal (Gold): Complete courses A to G.
echochrome master (Platinum): Collect all the trophies.