Rena I think this is quite an interesting find:
Elements: Light(1), Dark (2), Earth(3), Air(4), Water(5), Fire(6)
NPC values at UnkE: Hell Flyer(3), Shark(4), Earth Rock +1 & +60(5), Crow(6)
Item values at UnkD: Dark Endura(2), Leather Belt(4), Scav Bow/Ice Blade(6)
Spell values at UnkB: Whirl/Tornado(6), FireBall/Fire from the Sky(3)
It makes sense that these values are how the server should determine which element is being attacked/defended during battles. Though the NPC's are labeled by their weakness, the server would determine their strength, or even possibly a no damage scenario (earth vs earth). I hope you can make
sense of this, I tried to label as best I could.