All you need to do is play, once or more.. I guess.
The goal is shared between the whole community so you don’t need to do all the work.
Killers interrupts 25,000 survivors
Survivors must unhook 250,000 survivors.Completing this challenge will unlock the Old Man Jake and Marked Spike Maul for the whole community! Completing each daily challenge will allow you to unlock the final anniversary challenge “It takes all 5” and its surprise rewards.