I'm not satisfied with the "hard mode" they made for Perfect Chaos in this game. He still takes 4 hits, just like in Main Stage mode and the only thing that changes is the places where Sonic lands.
This was what Chaos was planned to look like in SA1, but due to The Dreamcast’s graphic limitations, they went with the one that we know and you see the original on the intro and the mural at the end of the Lost World stage with Sonic