It's not particularly remarkable to hear that Fortnite: Battle Royale has added a new batch of challenges and rewards. However, this set is notable in that it's tied to a Borderlands 3 crossover event that's meant to promote that game's upcoming launch. Fortnite's island map is now how to a special Pandora-themed Rift Zone where the game's visuals are changed to resemble those of Borderlands. It's in this area that you'll need to complete one of the new challenges, which asks you to search different Vault Symbols. In the video guide above, we run down the exact locations of some of enough of these Vault Symbols to complete the challenge and earn the corresponding reward: the Vault Banner.
For help with the other tricky Borderlands-themed challenge, check out our guide on how to find Claptrap's missing eye and return it to him.