This guide will show you how defeat the hardest challenge in the game, "Brutal Challenge: Rulers of the Outer Worlds!" I was able to do it without even all the folios collected. Easy to do for all skill levels.
Timestamps:
0:00 Intro
0:08 Materia & Strategy Guide
1:53 Round 1 & Strategy Breakdown
4:52 Round 2
9:13 Round 3
13:25 Round 4
16:08 Round 5

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