Amy and her group were making smooth progress, of course, partly because William was deliberately going easy on them.
Normally, Amy should have only been declared the winner on the second floor after defeating the humanoid shadow.
William didn't really care that Amy had guessed the masked man was him. What did it matter if such a foolish child knew his identity?
The third floor featured a giant robot designed by William, whose strength far surpassed the Demi-God level. Defeating it wouldn't be easy.
This was designed to make Walker and Amy demonstrate all the secret techniques they had learned.
What was the point of their training if not tested in real combat?
Considering Amy's feelings, William had designed a robot instead of a living creature. Defeating a robot wouldn't involve bloodshed.
After all, she was just a child, and William didn't feel the need to force her to take a life.