Quote from The_Last_Dovahkiin»
Well, that's kinda why they have so much health. Also, why would they deflect arrows while flying? Are we SUPPOSED to only be able to kill them with swords? Kinda makes the battle pointless. I'd like some ranged action, with them breathing fire or ice from above, while I loose arrows in their direction, hoping to strike the final blow. Maybe even better, make it so at half health they are forced to land and don't fly again. Pretty much, you cripple their wings to make it slightly easier to hit them, though you also make it easier for them to kill you.
From what I know you can kill them with ranged weapons from other mods if there strong enough.