Instructions
Finish the 150cc Leaf Cup to receive the Royal Racer kart. The tracks in this cup do not possess steep curves and are fairly straightforward. Racing with any available kart can help you unlock the Royal Racer vehicle efficiently.
Win the 150cc Lightning Cup to unlock the Dragonetti kart. The races in this event feature steep curves. Use a light vehicle to help you maneuver through each corner with precision. Playing with Princess Peach or any of the babies, for example, is an ideal choice.
Finish the 150cc Star Cup to unlock the Quacker bike. This cup features open roads and obstacles along the way. Nevertheless, staying ahead is vital in case you make multiple mistakes. Therefore, unlock the Royal Racer and/or Dragonetti first and use them to win this event.
Win all 150cc Retro Grand Prix events with a one-star ranking or better to obtain the Aero Glider kart. Star rankings are achieved through technique and style. Do not fall off the track, get hit by objects or stay behind within a race. Moreover, focus on unlocking all previous vehicles first, as they will provide greater assistance in winning all races as a result.