I love this fight, but out of all the fights it's absolutely baffling that, lore wise, this one not only has a lower time limit, but any time limit.
"Hunter, here we make our stand against a monster of myth, that once burned this country from the map and will devastate the entire world if we can't stop it. No matter what, we must defeat it...as long as you can do it in 30 minutes or less. If not, we're gonna pull you out and just let it burn."
Could have at least made a cutscenes where it roasts you at the 30 minute mark or something.