--
"Okay, things are getting a little more complicated now."
Cedric wasn't referring to the mechanics of the 2nd round when he said this. That remains the same: learn and master the skill, defeat the room guardian, move on to the next room, and rinse and repeat.
He's talking about the skills he had to learn.
Currently, he's at the 55th room, far ahead of everybody else. At this point, the difficulty of learning and mastering the skills available here spiked sharply, enough to force him to spend weeks or maybe even months trapped in the same room.
And this was mostly because he's learning genuine Immortal Level techniques now, all of which could alter reality itself if used. And the subject was broad, too. Focusing on one aspect could make him miss the really important aspects of the technique, taking up more of his time and effort.
Take this [Blood Seal Twisting Murder] skill, for example.
