User blog comment:Plexioth- xD/Monster Hunter 3 Ultimate/@comment-4911512-20140527021608/@comment-17735225-20140527130840

I've seen sub 30 minutes solo videos (melee) of  those quests already.

But these are like really good players that can solo most normal g-rank monsters within 10 minutes and they are using near optimal set for the job. Many of them didn't use heroic or adrenaline though, as 20-30 minutes run without getting hit is probably too stressful and thus not practical for the best offensive style.