Bronze

Ready to rock
Clear the first level

Stabilized
Get all medals in any level

All powered up
Have all 4 power-ups at the same time

Ambitiously ambidextrous
Clear at least 3 levels with all 3 controller types

Bubbler of the week
Get 10 enemies within the same bubble

Skull and crushed bones
Crush 10 skulls without touching the ground

Firewalker
Defeat 100 enemies using the Fire Boots

Silver

Hard as Rock
Complete the game on Hard difficulty

Given to wail
Clear all levels using a guitar

Incognito
Clear each level collecting less than 20 points

Gold

The Per Lundberg Syndrome
Get 100% of all medals

There is also an elusive secret trophy, adding up to a total of 12.

Source: http://www.ps3trophies.org/gam…../trophies/