Bam was silent and he did not carry a magic lamp as he walked down the quiet and dark stairway. The fact that he could see while moving in the darkness was thanks to a magical effect in his helmet which made it function like a set of night vision goggles.
As he did not possess the DarkVision skill, this was the best way he could attain a similar effect. While he could only see up to 10 meters in front of him, combined with his magic sense, what he could see was not only as bright as day but in a much wider radius than what he could achieve with his eyes alone.
In addition, the enchantment on the armor meant that there were no sounds of metallic rustling when in motion. Unless they had an exceptional hearing or were a skilled thief, not even someone standing beside him would be able to pick up on the sounds of him walking.
