Challenges completed by hydroblast

Gimme some space, man

Star Road : Finish in the 1st position with Rosalina

Meaty! ...or.

Star Road : Get on top of the meteor thing (I forgot exactly what it was supposed to represent)

Things are going South

Radioactive Labs : Go to the Southern-most part of the track.

Win the race! ...Twice!

Radioactive Labs : Finish 1st 2 times in a row

This is N. Gin Labs 2, basically

Radioactive Labs : Complete the track in VS mode, with Wario, in medium mode

With 8 participants

I'VE FALLEN! AND I CAN'T GET UP!

Rooftop Speedway : Fall in the BEEG hole in the middle of the track

Smol Godzilla

Rooftop Speedway : Finish in the 1st position with Bowser

Part-time Job

Fun Chaos Factory : Complete the track in VS mode, with Waluigi

A very Funky Monkey

Fun Chaos Factory : Finish in the 1st position with Funky-kong

No chaos, no fun

Fun Chaos Factory : Complete the track in Time Trial mode

Y'know, thinking about it...how are there rainbows in space?

Colorful Spaceway : Finish in the 1st position without drifting, by starting with 20s delay

Come on and SLAM!

Thwomp Castle : Complete the track in 12th place

BEEG PLANT

Flower Fields : Finish in the 1st position with Petey Piranha

That's not Chocolate, Jimmy, don't eat it

Greatest Achievement Stadium : Break the Box in the mud.

25 Player Race

Rainbow Road 1 : Go to a "Force Jump" in VS mode, with 5 participants, with Daisy, in medium mode

No Turbo Circuit

Mario Circuit (DS) : Finish in the 1st position without drifting, with Waluigi, in medium mode

With 8 participants

Castle Dust

Bowser's Castle (Gamecube) : Complete the track in less than 1:05 in Time Trial mode, with Toadette

INTRUDER ALERT!

Bad Peach's Castle : Finish the game in the 1st position with Peach, with 2 participants

City Fort

Block City : Survive more than 1:10 without losing any balloons

Who Left These In Space!?

Rainbow Road (GBA) : Complete the track in VS mode, with 1 participant, without touching item boxes, with Bowser Jr