Officer Tepios:
I will tell you about the area you will enter and what you must do there.
The Hall of Suffering consists of 5 consecutive rooms. Each room has a Tumor of Death guarded by various monsters.
You must deactivate this Tumor. Once you have done so, it will become a Destroyed Tumor.
Of course, the monsters will try to stop you. Once the Tumors in all 5 rooms are deactivated, you may proceed.
But I leave it up to you whether to face the monsters or the Tumors first. Remember, even if you destroy the Tumor, the nearby monsters won't simply disappear.
Keep listening.