Drawn to life how to defeat the scorpion

Okay when the scorpion blows off the poison cloud, sometimes clouds (you drew) appear. Jump up on the clouds and there you see wilfe (the shadow guy) and try to hit him with your sword. Sometimes it will take affect and will hurt the scorpion. When you see the circle above his head that means he's stunned. Then you do a ground pound. Do this until the scorpion dies