Legendary Items include Legendary weapons and armor sets in Greedfall. These weapons and armor are the best and most powerful of the game. They deal high damage and provide great protection but as expected, are tough to get.
Legendary weapons and legendary armor sets in Greedfall are to either found in a hidden chest or after you have fought a boss. You might get a key for these hidden chests and then you can open them.
GreedFall Great Honor Duel Flamberge Location
West of the entrance to Magasvar, “The Vale of the Great Battle” there’s a hot spring suspiciously guarded by a Nadaig Vedemen. Defeating this guardian will allow you to loot the body of the dead guard which contains two pieces of the Major armor set and a key.
The key is used to unlock the chest found at the top of the wooden tower next to the Alliance Outpost Camp. In this chest you’ll find the Great Honor Duel Flamberge, a pretty good long blade which has two upgrade slots.