The Demon Slaying Temple's last two Illusion Domains required at least Immortal+ level strength to pass through unscathed, and even Eternal level strength might be necessary.
Of course, the initial stages of the eighth difficulty wouldn't be so perverse; this was all due to the fact that the current area was the Hidden Map of the ninth chapter.
Lin Xun and the White Elephant Demon exhausted all their means and could only barely manage upon first entering the fifth Illusion Domain.
Had it not been for his use of the Beginning of the Holy Spirit to forcefully boost the power of 'Analysis Power' to analyze and locate the core of the formation, and thereby break through, the two of them would have had no chance of leaving the Execution Evil Hall alive.
"With such high difficulty, there's no way to play without cheating..."