Mario Kart 8

Complete every single cup with a first place unlocks new alternate Title Screens and unlocks the true ending credits.

Successfully complete the Shell Cup.

Get a gold trophy by finishing first place in any cup and engine class in Grand Prix mode to unlock one of the following characters thirteen characters at random. Note: Once a character has been unlocked on a particular track and CC class, you will not be able to unlock another new character the exact same way.

Baby Rosalina
Gold Peach
Iggy
Lakitu
Larry
Lemmy
Ludwig
Metal Mario
Morton
Rosalina
Roy
Toadette
Wendy

Collect the indicated number of coins to unlock body, glider, and wheel parts to customize your vehicles. You will unlock a new part for every 50 coins earned; after earning 1,000 coins, the intervals increase to 100 coins for each unlockable part. Coins can be earned in Grand Prix, VS mode, and online races.

Azure Roller (Wheels): 1,200
Blue Standard (Wheels): 150
Bowser Kite (Glider): 2,000
Button (Wheels): 400
Cat Cruiser (Kart): 2,200
Circuit Special (Kart): 750
Cloud Glider (Glider): 450
Comet (Bike): 1,400
Crimson Slim (Wheels): 850
Cushion Wheels (Wheels): 50
Cyber Slick (Wheels): 2,600
Flame Rider (Bike): 950
Flower Glider (Glider): 650
Hot Monster (Wheels): 2,100
Jet Bike (Bike): 1,700
Landship (Kart): 900
MKTV Parafoil (Glider): 2,500
Metal Wheels (Wheels): 1,600
Mr. Scooty (Bike): 100
Off-Road (Wheels): 1,500
Peach Parasol (Glider): 2,400
Pipe Frame (Kart): 200
Plane Glider (Glider): 550
Prancer (Kart): 800
Retro Off-Road (Wheels): 1,000
Slick (Wheels): 300
Sponge (Wheels): 2,300
Sports Coupe (Kart): 2,700
Steel Driver (Kart): 1,100
Teddy Buggy (Kart): 1,800
The Duke (Bike): 700
Tri-Speeder (Three-wheeled Kart): 250
Varmint (Bike): 500
Waddle Wing (Glider): 1,900
Wario Wing (Glider): 1,300
Wild Wiggler (ATV): 350
Yoshi Bike (Bike): 600

Collect 10,000 Coins (Multiplayer gives players the total amount of Coins collected by all players during each race).

Use the Wii Handle for 50% of your most recent 100 stages.

Get at least one star (54 points or more) on every 150cc and Mirror Mode race.

Beat all of the Time Trials Staff Ghosts.

Earn the indicated number of points in Grand Prix mode to be rewarded with the corresponding number of stars.

1 star: Earn 54 or 55 points (two 1st and two 2nd place finishes or three 1st and one 3rd place finish)
2 stars: Earn 57 points (three 1st place finishes and one 2nd place finish)
3 stars: Earn 60 points (four 1st place finishes)

If you hold a specific button while selecting the Animal Crossing stage with A, you can actually choose what season you play on. These are: L for Spring R for Summer zL for Autumn zR for Winter.