Here is the full list of all 21 Circus Pocus trophies - there are 8 bronze, 3 silver, 9 gold and 1 platinum.
Unlock all trophies
Escape the cell
Whistle 10 times
Whistle 72 times
Whistle 100 times
Make a roll 10 times
Make a roll 50 times
Make a roll 100 times
Die once
Die 10 times
Pick up your first star
Pick up 5 stars
Pick up 10 stars
Pick up a stick
Ride a ball
Kill one clown
Kill 5 clowns
Kill 10 clowns
Defeat the first boss
Defeat the second boss
Defeat the third boss