Riot Trophy in A Juggler's Tale
Riot on the stage of the fourth act.
How to unlock RiotYou will get this in Act IV.
You'll need to do a little bit of backtracking to get this one. At the start of Act IV, get Abby back up on her feet and make your way to the right. You'll eventually reach a scaffoling but on the ground just to the left will be a tipped over crate of rocks. Pick up one of the rocks and bring it all the way back to the start of the Act. When you reach the stage area, throw the rock and the small green plant hanging on the left side. When it falls down, the trophy will unlock.