So ways to get said Helixhorn:

1. Do the same hunt dozens of times over for the ten percent drop rate chance

2. Hunt fucking everything forever to unlock rank 7 hunts for the 75% chance

All of which would be faster if my game hadn't just glitched the fuck out when Aranea dropped in on me, so nothing worked

Now I have to kill the giant lobster again

She made mine glitch at one point, too

She appeared right as the battle was ending

And then her ship stayed suspended above where the fight was until I restarted

She dropped in on me in a tunnel, except it glitched and I got her dialogue, but no her, and then my game stayed in fight mode, so no chocobo, no options on the menu it just paused, everything

It was well irritating

Augh...