Possibilities

Guildmaster Bradt had to admit that this was one of the most novel letters that he had ever read in his entire life. It was truly an experience in and of itself.

He suspected that the author intended for it to be that way, they could have been a lot more cut and dry regarding this matter, but they chose not to. He had gone in-depth into a lot of the other conditions and offers but lightly added the most shocking offer in the entire letter. Which was the offer of a detailed map of the Shionel Dungeon that was highly accurate and precise, allegedly.

He still wasn't convinced that the claim was true. However, if it was true, there really was only one way that such a thing was true.

"A Martial Art technique, hm?" He mused to himself.