i don't know but try winning all cups on mirror mode
Finish all 150 CC cups and you will get the allcup tour.
beat all the cups on all ccs
Play all the cups on all the different diffucalties
To unlock Daisy, beat all of 50cc Nitro Cups. To unlock Dry Bones, beat all of 50cc Retro Cups. To unlock Waluigi, beat all of 100cc Retro Cups. To unlock R.O.B., beat all of 150cc Mirror Nitro Cups.
you have to have gold in all the cups to unlock it :)
Just beat all the grand prix cups and youll unlock all the karts and for all 36 karts beat ALL the mirror mode cups
You have to win either all of the Mirror Nitro cups or all of the Mirror Retro cups to unlock ROB. To unlock Mirror Mode, you need to win every 150cc cup.
to unlock dry bowser, you need to get a one star rank or better in all 150cc Wii cups (all the cups on the top)
You have to unlock every staff ghosts, unlock every characters, unlock every karts and bikes, unlock every cups in all of the engine classes, get all the cups at least one star or more, and also unlock mirror and win that engine class.
Get gold trophies in all cups.
You collect a certain amount of coins, you unlock players.