Collect Doomsday Control Keys from high security IO locations is one of the Resistance challenges in Fortnite Chapter 3 Season 2.
You will first need to patch The Imagined into a loudspeaker before unlocking this Week 10 challenge. Luckily, you don’t need to find the Doomsday Control Keys in the same match, so don’t worry if you get eliminated before collecting both.
Completing this challenge will reward you with 23k XP, which will help you unlock skins from the new battle pass.