Although I got to the end of the stage with 2 knights, I never finished stage 5' in RoB. When I learned there was no boss, I'd already played the game and done everything else and I gave up. I also never finished Dracula's stage with Richter, but I did get up to Dracula.
In OOE on my Hard max cap Level 1 playthrough with Shanoa, I was trying to beat Death without using Glyph union. (Death was by far the hardest boss, due to his scythes being sporadic). I managed to pull off the Death Glitch by accident where he stays frozen mid screen. I took that as a sign it was time for me to beat Death and accepted that win.
A previous gf bet me 1000 dollars I couldn't beat POR on Hard Max cap level 01, I proved her wrong, and I said I didn't want the money. (this was back when I was a poor student

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If I was the Archie of the CVverse, Shanoa and Yoko would be Veronica and Betty.