I Recommend that you get the Iron or Gold armor and the Silver or Gold Sword Before you take on dungeon 34 Also on Dungeons 56 and up You will start getting ultimate items not say what or where they are.
Iron or Gold armor can be obtained by sub quests and lowers the damage you take.
Iron or Gold Swords can also be obtained by sub quests and increases attack power
If you want to learn about the ultimate equipments story, what they do, and where they are. Go to the Ultimate Equipment Page.