Challenges completed by Invu
Bowser's pipe cleaner employee
Neo Bowser City : Destroy all pipes in VS mode, with Hammer Bro, without touching any Goomba nor pipe

Snow Land : Complete the track in less than 1:15 in Time Trial mode

Isolated but not useless
Mario Circuit : Find the hidden boost panel in VS mode, in less than 1:00
With 8 participants

Level 1
Level 1 : Complete the track in less than 1:10 in Time Trial mode

Cut mk8d
Snow Land : Find the secret passage

L'objet perdu
MKW1 Mario Circuit : Mais qu'est-ce qu'il fait là? (Défi secret / Secret challenge) in VS mode, with Rosalina

Maskass vainc sa timidité
MKW1 Mario Circuit : Finish in the 1st position in VS mode, in 150cc mirror class, with Shy Guy, with 101 participants, in less than 1:01
In difficult mode, no teams

Find Easter Egg 9
Wario Colosseum : Destroy all Easter Egg

Mario Kart 4 (O) - Special Cup : Make at least 34 points in 4 races in VS mode, in 200cc class, in different circuits
In difficult mode, with 8 participants, no teams

King B's Challenge
Bewildering Beehive : Reach the pot of honey at the starting line in Time Trial mode, in 200cc class, without drifting

Mission 1-3: Geometry Dash Reference
Bewildering Beehive : Jump on the yellow and pink orbs

Waluigi Stadium : Jump off of every Ramp by performing 5 tricks

Scattered on the Mud
Wario Stadium : Collect all coins in 150cc class, without going backwards, with Wario, in less than 1:00

Noob Jumper
Extreme Jump Beach : Complete the track in less than 0:42:750 in Time Trial mode, in 150cc class

Glitcher
Extreme Jump Beach : Just do the glitch (you'll need it for this track's time trial challenges! 😉)

Galactic Harmony
Rainbow Road : Finish in the 1st position in VS mode, without falling, with Rosalina, with 12 participants
In difficult mode, no teams

Opening christmas gifts
Battle Course 3.1 : Destroy all Gifts

Wallergic
Frozen Peak's Pyramids : Reach the end of the pyramid part. in VS mode, in 50cc class, without touching the walls, with 1 participant, with Donkey-kong, without touching any pipe, while constantly accelerating

Collecte d'huile de Bowser Jr.
MKW1 Mario Circuit : Bowser Jr. veut récolter les 3 tâches d'huile in Time Trial mode, in 150cc class, without touching any pipe, Goomba, Piranha Plant nor fire plant, with Bowser Jr, without falling, in less than 15s, without drifting, without making tricks

Funky Style
MKW1 Mario Circuit : Funky Kong est le pro des acrobaties funky-stylées depuis MKWii!!! (Défi secret / Secret challenge) in VS mode, in 200cc class, with Funky-kong, in less than 20:08, by falling at most 42 times, in 1st place
In difficult mode, with 8 participants, no teams
