https://www.gamespot.com/articles/fortnite-challenge-guide-follow-flush-factory-trea/1100-6460750/

Fortnite: Battle Royale Season 5 is now entering its third week, which means developer Epic Games has introduced a new set of challenges for players to complete on PS4, Xbox One, PC, Switch, and mobile. As with previous weeks, the challenges are split into two categories, with some being available to everyone while others are exclusive to Battle Pass owners.

On the free side, this week's challenges involve dealing 500 damage to opponents in a single match, using a launch pad, and following the treasure map found in Flush Factor. While the first two shouldn't give you much trouble, the third of the bunch will require a little bit of legwork.