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

Ball Frenzy (Bronze): Get nine balls at the same time on the screen. 
Blind Balls (Bronze): 30 shots in a row without hitting a brick. 
The Wall (Bronze): 50,000 reflected balls. 
Cannon Sniper (Bronze): Twenty cannon shots hit the target. 
The Jongleur (Bronze): Control three or more balls for at least one minute 
without letting them fall. 
Ancient Conqueror (Silver): Complete Ancient World Campaign. 
Planets Ruler (Silver): Complete Planets World Campaign. 
Crystal Hunter (Silver): Collect 200 Gems. 
Lust for Life (Silver): Earn three or more lives at one level. 
The Collector (Gold): Collect all other trophies.