Dark walker feat

[DillonG]

I got the dark walker feat without doing the challenge, maybe I got it when I played it in October and didn’t notice but it told me that I got it when I started a new survival in February. I am on PS4 by the way

[Ansible]

I'd like to resurrect this two year old thread to report that I too received the badge and rewards for "defeating the dark walker" even though I DIDN'T. I was actually in the middle of a Dark Walker run (after failing multiple times on previous runs), and picked up one of the notes, and then all of a sudden it said that I won and gave me the badge. But the game didn't stop, it just kept going. And the dark walker eventually got me. But I have NOT ever successfully banished him, not even close, yet I still have the badge that says that I did. So I can safely say that this challenge is somehow bugged.