Edna & Harvey: Harvey's New Eyes

Chapter 1

Midway through Chapter 1, a clown will show up in the main hall of the convent. Talk to him, ask him about tricks and you'll get the option of several balloon animals. Choose any balloon animal (I just stuck with the default option) and keep clicking on it until the trophy unlocks (around 20 times). This must be done before having the clown make a wrench balloon and using it in the stairwell above the main hall.