The hard difficulty of the Ancient Battleground Legacy dungeon was also similar to the medium and easy difficulty, except the enemies had higher levels, and there were more high-grade enemies.
The trick of doing this level was the same as the lower difficulties, which was following the golden knights through the secret path. Except with Jack's prowess now, it took him only a short time to gain the minimum required one hundred kills, even with the increased difficulty. In fact, he did it with just a single assault.
He flew into the incoming enemy all by himself. He then cast Orb of Storm before casting Perpetual Lightning Judgement. The Runestone of Spellcasting was beside him, shining brightly.
He had trained a lot on using mana manipulation to empower the power of this spell in the Space-time Chamber. This time, he finally used it in a real battle… a real virtual battle, to be precise.