Remember that Borderlands: The Pre-Sequel gun nobody could figure out how to use? Yeah, well somebody figured out how to use it. That didn't take long.
Possible spoilers and all that.
Admittedly the person in the above video, KnowledgeFX, went into the game file and tampered with their stats so they could yank Excalibastard from its glimmering perch, which is kind of an anti-climax after all the hubbub. Here, however, is what they found: you need a badass rank of 2500 to make the gunsword of one-day-old legend yours. Badass rank is obtained by completing specific challenges. It's separate from your regular level.
The weapon itself is pretty beastly, with nearly peerless accuracy and damage, not to mention a high chance of elemental effects and—most crucially—a 50 percent bonus to melee damage and a whopping 110 percent extra damage to critical hits.
Now hopefully someone will go out and earn it for real, although I feel like this peels some of the sheen off that accomplishment. Oh well.
Images courtesy of Borderlands Wiki.