God of War Ragnarök
48 Achievements
46-58h
PS4
Backyard Brawl
Battle the Mysterious Valkyrie Details for this achievement will be revealed once unlocked
67.3%
How to unlock the Backyard Brawl achievement in God of War Ragnarök - Definitive Guide
TheIcemanPlayeth
TrueTrophies
TrueTrophies
The part of the game where you get this (and it appears to be unmissable) is after you complete the very long section where Atreus goes to Jotunheim and meets Angrboða.
Spoilers ahead.
Spoilers ahead.