Well that part is the most difficuld one!
Here I'll explain to you what you have to do.
Follow the steps carefully!
-The first goes away when it touch the light that is on the floor turn immediately when it desapears. -The next will disappear with the first light on the left, STOP under it don't keep running.
-When it disappears run in direction of the tv guy, don’t stop.
Sorry for the late reply!