I've been away from home for a couple of days, and managed to do it first time after I got back. 😂
Nervous as hell during the Odin fight. As I said, RNG. The Odin fight went almost flawlessly, I managed to stagger him a second time just as he cast spatial distortion so I didn't even have to worry about him capturing one of my characters.
Funnily enough I almost died to the second fight too. Lightning based enemies are such a pain in the ass.
Just one more legendary challenge, and then I can do the final two chapters on hard for the plat.
And done. Beat Odin first time with Sephiroth/Cloud. Although it was a massive clusterfuck of a battle that went completely off plan. Thankfully I managed to do their synergy attack just before Cloud got KOd which gave Sephiroth temporary infinite mp to revive him, cure himself etc.
So damn glad that's done with. The battle system really shines in hard mode, but those challenges were another level of difficult.