Completionist

Clear every course through Peach's Castle

The second file star.

Collect every Star Coin through Peach's Castle

The third file star.

Open Superstar Road-9

The fourth file star: every Star Coin on Superstar Road 1 to 8.

Earn all five file stars

The fifth needs every Superstar Road Star Coin, every exit and Nabbit caught in Worlds 1 to 7.

Clear New Super Luigi U

Its own final battle at Peach's Castle.

Collect every Star Coin in New Super Luigi U

Earn all five file stars in New Super Luigi U

Clear your first Challenge

Any Challenges mode stage.