How do you pass the second riddle in the 'Asylum gardens'?

The second talks about a clown. "I live for the laughter. I live for the crowd. Without it, I am nothing."

Somewhere in the maze, there is a sad clown, and around it are sad faces. Just make them happy by hitting them. They will turn, revealing happy faces. But if you're not quick, the faces will turn again.

Hit the faces until they are all happy
This is hard as they all change

Hit them all so that they only need one more hit to be on the laughter side. Stand In between the two on the left, one hit with a long sword will change both at the same time. Do the same on the right hand side and don't forget the one at the top.

Put them all one away from the correct position then hit them in this order -
Bottom left
Top left
Bottom right
Top right
Middle

Hit them all so they are all one hit from being smiles then stand in the middle and, using the hammer, charge until it is fully charged and release the button causing the electric hammer hit and if you did it right it will hit them all at the same time.