Blistergrass is a drop, sun blade is a general warrior weapon. I agree that the Hunters have some SERIOUS power gaps (the first few bows are super far apart, Wooden (10) then Spooder (25), then Tuaa (35), then 40 at a min.
Knights are actually kinda OP, though, taking next to nothing from a hit even from a scarab. Couple this with using the Warrior faction’s offensive skills, they’ve got enough HP and such from subclass that they’re pretty much unstoppable. Shield Rush is the BANE of hunters, who rely primarily on dodging, as it slows them hugely and practically eliminates jump (even double jumping doesn’t help).