Bronze

Good Knight, Sweet Princess    
Defeat three monsters and then hit the Princess locker wheel 3 times to start the Princess multiball and gain this Trophy.     

Dragon Rider    
Travel through three areas: the Haunted Mill, the Forest and the Dungeon to encounter no less than 12 monsters! Defeat them all and shoot the Loot hole to begin the fight against the giant Random Dragon. This trophy is for those who can defeat the mighty beast.

Master of Elements    
Collect the four elemental scrolls in the Orcanium. You can gain scrolls there during Skillshots.

Silver

Epic Set    
Loot as many items as you can to eventually find some Epic stuff with better stats. The whole set consists an epic weapon, shield, armor and helmet. You can keep those items after the game is over, so loosing a game does not mean that you have to start to collect the set from the beginnig!

http://www.ps3trophies.org/game/zen-pinball/trophies/