Here is the full list of all 15 JoJo Siwa: Worldwide Party achievements.
Complete the tutorial.
Obtain the Dreamland Concert Outfit.
Obtain the Circusland Concert Outfit.
Obtain the Sportyland Concert Outfit.
Obtain the BowBowLand Concert Outfit.
Obtain the Sweetland Concert Outfit.
Obtain the Sunnyland Concert Outfit.
Obtain the Moonland Concert Outfit.
Obtain the Danceland Concert Outfit.
Obtain the SuperheroLand Concert Outfit.
Obtain the Worldwide Party Outfit.
Wear a makeup.
Complete a level flawlessly!
Perform a special dance in the concert.
Complete the game.