One of the Week 8 challenges in Fortnite Chapter 2 Season 7 will ask you to speak to five characters, some of whom are actually aliens.
Not all of these are characters are infiltrators, but there are a number of them on the island.
Where to unmask infiltrators
All you have to do to complete this challenge is talk to the characters normally, and choose the dialogue option that seems suspicious.
The alien will then come out of its shell to attack you.
Be mindful of enemy players in the area getting in the way of you completing this challenge. Make sure you're armed well enough!
