Achievement: Ready Player One
This achievement was only achievable during the finals of Popmundo Festival XXII.
To get the achievement, the character needs to visit any Festival Grounds locale. An Arcade Machine can be found at the items tab inside the locale.
Look at the details of this machine and click the Play Race to the Festival link to start playing a minigame where you control a car that is racing to the festival while avoiding obstacles.
Reaching the finish line instantly awards the achievement. There does not appear to be a time limit, so even just having the minigame open without actively playing it will eventually grant the achievement.
A video playthrough of the race to the festival is available.