Select the Axe target mini-game. After talking to the clown, your spells will be switched to the arcing thrown axe. Move forward slowly towards the challenge room without getting locked in by stepping too far ahead. Once close enough, you can knock some targets without using all five charges. Select the Axe target mini-game. Choose a hero with the Clumsy trait. He will be able to break all the targets with his sword, which counts as a win.