This is the easiest of the scored events. There are three ways to get points:
--Evade a bouncing ball.
--Gather silver stars by sliding over them on the ground.
--Gather gold stars by jumping in the air to collect them.
In the beginning, you only have to dodge one ball at a time. Surviving is the most important thing. Stand about a third of the way from the right hand side of the screen. When the ball appears, slide slightly to the left or right so the ball goes over you. After a ball passes collect stars. Silver stars are the easiest because you can quickly slide over them. Gold stars require you to tilt the Vita when you are under them to make you jump up and grab them. If you miss all or some of them the first time, be patient, wait for the next ball to pass and try again.
Eventually, the game will get harder and you will face more than one ball at a time. However, that does not happen until after you have the opportunity to collect 500 points for the trophy.