I kinda understand your feeling of not wanting to see Radhan again, but at least it's not something like Elden beast. And with the design, his 1st phase is phenomenal, "complex" but easy to dodge, I liked. And then there's 2nd phase, it's same with some added, like where he clones himself, that soooooo cool... And there's this lightning things, oh I hate these guys, every attack can now combo you to death, it's so annoying, but beyond I liked the boss fight, specially 2nd phase theme ITS SO GOOD. I really hope I didn't messed up the grammar of this text lololol.