A good thing too, as not every character's attacks are effective against particular monsters, so switching is key. (videogamesuncovered.com)
These crafting materials are particularly difficult to find, because they're not directly associated with particular monsters like aqua sacs are with Jyuratodus and flame sacs are with Anjanath. (vg247.com)
The main quests, for the moment, act as incentives to explore and create certain items, and as gating mechanics, preventing you from crafting better arms and armour or from accessing harder areas of the universe until you've beaten particular monsters. (theguardian.com)