You can get this in the 1st Delete Scene: Cupcake Cup; called Point Brake. It is available from the start. For the 5 stars you must Complete the level in Par Time, Collect all the pick ups, Find the Hidden Start and Collect all Bananas. The Bananas are the hardest to get. Do not use your boost at all. The Banana is located above the 3rd collection of pick ups with the single Jump Pad underneath them. This will take you multiple tries to master; you have to rotate your bike so the front wheel is completely up and use your boost in the middle of the jump. You have to be directly beneath the Banana for you to reach it. After you hit the Main Banana, 5 more will spawn and your boost will refill. Try to collect the two on the left on your way down and use your boost at the peak of your jump to collect the last three. The Hidden Star is located to the left of the spikes when working backwards after going through the underpass. Now just complete the level under Par and achievement should unlock. I finished with under a second.