User blog comment:Kogath/Monster Hunter 4 Ultimate for the Nintendo 3DS/@comment-7584137-20151111180343/@comment-7584137-20151111182423

@BellGoRiing

In order to unlock quests such as Apex Gravios and Tidal Najarala, you have to hunt about 35/25/40 times the monster in question (it varies). Hence, genocide :P