He had opened the way to a new world, and the rest of the world had quickly started to move. Many Players had already left the 2nd floor, seeking new adventures on the 3rd floor.
‘If I had quietly continued to receive treatment, I would have been too late.’
And he was already behind in the running because of his late start.
The fiends and Players would obviously start clashing on the 3rd floor. To stop that, he had to restore his health as soon as possible.