Apollo doesn't know whether this is part of the test or something really is happening.
They can't contact the professors and Apollo is exhausted with the continuous use of magic and skills. He knows that using too much and relying for a prolonged time on the system can tire his mind and body. It wasn't something that could be easily fixed by simply upgrading his stats. Apollo himself needs to fully master the system and accept all the burden it causes his mind and soul.
However, there is another thing that currently weakens him, the existence of an unknown artifact that seems to surpass the artifact he had collected in a Zenith-rank dungeon.
"Damn it!" Apollo exclaimed as his hand landed on the ground, embedded on its surface was a powerful magic circle he had cast, with it he wished to stop the monster from advancing.