User blog comment:Plexioth- xD/Monster Hunter 3 Ultimate/@comment-76.69.5.128-20111117090934/@comment-111.251.136.71-20111117160914

And you don't have to worry about online or offline quests this time. Technically you can complete every quest offline by your own in MH3G (even G-rank quests),  sort of like the earlier PSP series. So every monster is available offline.