The ninth stage of the Kanigem Tournaments

Adding to the question. Will the game end if I simply reach the Angels?

It depends on the number of errors made by the mapmaker. If there are no errors, then it will end.
Coliseum, in general, is a very careful person. I'm afraid of getting reprimanded for a more specific answer, like for "discussing" it. And it won't take long for me to check it myself.