It took eight of us to defeat the Ultima Weapon when it came down to it. And even then, Hydaelyn's power was the only thing protecting us from the spell Ultima which leveled the Garlean fortress. It was her power which tore the Primals essences from it too, before we managed to fell it in battle.

[He thought for a moment.] There is also Omega Weapon in my world. There... was, a man who was trying to take its power for himself. Fortunately, that man is dead.