Named weapons lore
A lot of the unique skinned exotics are old GW1 generic weapons. Honor of Humanity and Firebringer were the Gladius and Fiery Gladius respectively, for example. Deathwish was the GW1 Bone Staff. Etc.
Some are named for GW1 NPCs, directly or indirectly. Adam, for example was a skull that the henchman Eve carried around and talked to (and according to her, talked back – woulda been awesome if they gave that exotic skin combat chatter only the wielded could hear).
But aside from such scenarios, where you can infer from model or name, the only weapon skin that has a defined piece of lore would be the Fiery Dragon Swords. They were crafted by Ascalonians attempting to copy the creation of Magdaer and Sohothin – which the Orrians created – in the end they were only copies by appearance and means of combat.
Stop treating GW2 as a single story. Each Season and expansion should be their own story.
(edited by Konig Des Todes.2086)
But apart from skin or name-related hypothesis, are there no dev quotes or document that may shed some light on more obscure weapons? Take Genesis or Entropy, for instance, these are quite popular skins, it’s a shame they don’t seem to have appropriate background (well, it can’t be worse than the legendaries anyway^^).
As far as I know, only dev comments on weapons useable in GW2 would be the FDS. And aside from Akitten o direct lore in the game – just connections by name/appearance to something in GW1.
Though the precursor achievements should be giving some flavor to the precursors and in turn legendaries. Whether or not there is any direct lore is unseen, but seems likely.
As for Entropy specifically, it shares skins with the “Cultist Hammer” from Cliffside Fractal, so they may either be the same, or Entropy be akin to the Fiery Dragon Swords: copies of the original more powerful weapons. I’d bet the latter.
Stop treating GW2 as a single story. Each Season and expansion should be their own story.