Can take 5* Hyperion to R4 but... I DONT KNOW HOW TO PLAY WITH HIM, HELP!

I'm leader of my alliance, so for war purposes I was going to take 5* Korg to R4 to strengthen our defenses, but every time I ask this question everyone recommend Hyperion instead. Im close to uncollected, can't get over the hump. Reading on Hyperion, I'm obviously just using him wrong. How do I get the most out of him?
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Parry and keep heavy attacking, you have to play aggressive though before the furies keep expiring if for whatever reason you can't keep parrying due to nodes etc.
An Sp2 does a lot of damage too especially with a few furies and the chance to stun and get even more furies with the time to heavy.
Always upgrade your own roster to clear content before AW, especially if you're not uncollected yet.
Plus he's poison immune!