You must finish 3rd or better in the 50cc Shell and Banana cups (in Wii) or win the 50cc Shell and Banana cups (in DS or 7.)
Do 50cc and get at least one star rank in all 50cc cups
Get at least a 1 Star Rank for all 50cc Retro Grand Prix cups.
Baby Daisy - Attain at least 1 Star Rank for all 50cc Wii Grand Prix Cups
Win all the 50cc cups.
50cc 100cc 150cc mirror mode.
As many times that it takes for you to get a Star rank or higher in all of the retro cups.
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.
get a gold in all cups 50cc 100cc and 150 cc
You have to get a trophy in 50cc Mushroom and Flower Cups.
It means to complete all of the 50cc cups with a 1-star ranking. To do this, you have to get first place in every cup; getting 2nd or 3rd place is more likely to get you a letter ranking.
Get a star rank in all 50cc cups.