James and his daughter Miracle who follows him had indeed travelled through the canyon as fast as expected, or rather, they had made it almost to the end of the canyon. According to Nyx, they would have to fight a boss monster at the very end of the canyon.
It was going to be a good workout for James, after all, it wasn't his goal to get through the floors fast, he wanted to get as strong as he could and progress until the floors were literally watered down.
He had already accumulated quite a lot of material for his gacha ability. What he meant by this was that there were almost 300 zombies following him slowly and stealthily.
Hundreds of zombies had fled from James because of the title of terrorising undead he had won, but none of them were afraid of Miracle, which meant that Miracle seemed to have become a decoy for James.