All it takes to be badass is one weapon. If it is the right one.
Some quests demand a specific weapon. Something with Good on it for the Delera’s chain. Something with adamantium for Jungle of Khyber. Something for the portals in the Shroud.
But no quest or adventure area in the game is so weapon-myopic as is the House Cannith Manufactory, and for that matter, most of the quests contained therein.
You must have a Smiting weapon. You just must.