Challenges completed by hydroblast

YOU SPIN ME RIGHT ROUND BABY RIGHT ROUND

Oil Slick Circuit : Complete the track

Coins...COINS!!!!

Shroom Speedway : Collect 20 coins in Time Trial mode, in less than 1:30

Ants

Ribbon Ride : Complete the track in VS mode, with 100 participants

Picori

Ribbon Ride : Finish in the 1st position with Link

That's an...oddly specific number, isn't it?

Ribbon Ride : Finish in the 1st position by performing 34 Mini-Turbos

Let me out! LET ME OUT!

Ribbon Ride : Go to the bottom-right.

The smolest Coins

Ribbon Ride : Collect all coins

It gives me chills!

Capaccino snowland : Finish in the 1st position

In difficult mode, with 8 participants

Shiver me timbers.

Capaccino snowland : Finish in the 1st position with Link

Not an Ice Bro

Capaccino snowland : Complete the track with Hammer Bro

Off the Road

Capaccino snowland : Use a ramp to go on the not-track. I don't know a better way to describe them.

Frozen Coins (except they're not)

Capaccino snowland : Collect all coins

Staying Dry Bones

Koopa Coast : Finish in the 1st position without falling, with Dry Bones

Kupah

Koopa Coast : Finish in the 1st position with Koopa

Meanwhile in a parallel universe Eckspensive Eckspensive

Koopa Coast : Complete the track without touching any Cheep-Cheep

Yarr. Ye get all the item boxes, or ye walk the plank.

Koopa Coast : Hit all item boxes

The Coins that washed up on shore

Koopa Coast : Collect all coins

Unlock TT?

Unused Track : Complete the track in less than 1:45 in Time Trial mode

Avoiding To Victory

Bowser's Castle : Complete the track without touching any fire triplet, snow ball, Bullet Bill, fire bar nor Thwomp

I Don't Need Help

Bowser's Castle : Complete the track in VS mode, in 1st place, without using any item