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 will have to start 1,500,000 chases using the scoring event
Survivors will have to start and lose 1,000,000 chases using the scoring
Completing this challenge will unlock the Old-School Windbreaker and Marked Bloodlust Axe 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.