Collide with an opponent while boosted 5 times in a match
You can boost using the shoulder buttons. During a match, you must boost and hit of an opponent 5 times. You may be able to combine this with “High Speed Rocketeer” in the same run to save some time. You will know you have done this correctly as it will damage the opponent. For this reason, you need to make sure you set bubbles to 5 so that you can actually damage the opponent 5 times.