Bring it to the wrong fight
Very rare3.4%ObjectiveMissable
Found a certain weapon before getting a sword. (Page 38)
Genuinely missable. Page 38 references the hidden gun - you must get the gun BEFORE the sword. Route: turn on No Fail, reach the Quarry / Ruined Atoll, grab the Magic Orb, use it to pull the Envoy off the path guarding the gun chest, then grab the gun - all before taking the sword at Hero's Grave. Easiest on a fresh file or New Game+.