Edna & Harvey: Harvey's New Eyes

Chapter 3

Early in the chapter, during the bit with the ladder, click the ledge at least 20 times without the ladder falling. Don't try to skip the animation here, just wait until Lilli's done flailing and you can click the ledge again. Nothing will happen during these clicks but after 20, click the on screen and click the ledge again and the trophy should unlock during the cutscene after.