From the RtL Rules, page 17:
Finally, the overlord reads aloud the dungeon level description (found in the Quest Guide, next to the map), as well as the entire Dungeon Level card, including all "special" and "leader" text.
So, if you follow the rules you should read everything on the card to the heroes.
As a side note, the Road to Legend forums here are fairly active. You should place RtL questions over there.