Challenges completed by speyboyz

Bateau Cassé : Complete the track in less than 1:00 in Time Trial mode

Mini turbo challenge

Diddy Kong Summit : Finish in the 1st position in 150cc class, by performing 20 Mini-Turbos

donuts

luigi kart creature-shaped island : get to the left of the circle in less than 10s, without touching any Cheep-Cheep