There was a nice trick that Karoline accidentally discovered, which was by kicking the enemies off the hills when she got surrounded by three of them.
Sara handled one, Berry stopped the second, while the third got no one to stop him. But unlike what anyone expected, Karoline jumped in the air all of sudden, kicked him in the chest, and sent him flying backward.
She wasn't strong enough to harm this master, but her kick sent the man flying, crossing the edge of the hill they were standing upon, before free-falling to his doom, down to the ground.
"Let's do this!" as everyone saw this, they realised they could use this method to solve many problems here. And once they started doing this, they picked up pace again, gained momentum, and started pushing through lots of dark masters.
Yet they weren't able to cover up the entire place in the short time they had. William was already standing at the tower base when he got attacked with many arrows coming from different directions.
"Come on! What are you doing up there?!" He knew his friends and selected elites of his guild masters had it harsh at first, but now they were pushing with everything they got. However, he wasn't in the situation to allow for such a distracting attack to come.
He had to exert more attention towards these arrows, they came fast, and exploded fiercely on the ground, creating holes there. So he had to move and zigzag left and right, while his attacks at that dark master got decreased.
"Got you!" the moment he lowered his attack speed rate, he knew he was done for. The dark master high-end master wasn't some weak enemy or something, and he'd not waste such a chance.
Yet the moment he spotted that dark master coming, William didn't jump forward to meet up with him. Instead, he jumped backward, and retreated for hundreds of metres, while enduring a few arrows landing on him.
"Don't think about running away, you are going down now!" The dark master knew how bad William's situation was. And he already envisioned taking the life of this annoying weakling. Yet William didn't respond, dashed backward for a few hundred metres again, while his eyes were fixed on the dark master.
"You are going to hit the tower next, or do you think that tunnel will lead you out of here? Hahaha!"
"Now! Do it!" in the middle of that dark master's words, William shouted, and then something appeared. It was like a blue ball of lightning emerging from the ground, and it wasn't just one, but four!
"You..." the dark master seemed startled by that. His spirit sense just focused on William, missed or didn't care about what the four monstrous weapons were doing. And that was mainly because he didn't know how this tower initially worked, or what it was his weakest spot.
When William realised that he wouldn't be able to stop that dark master alone and keep him away, he decided to take the risk. He could see his friends leading masters to circle the entire hill zone, and soon enough all these annoying ballistae would stop firing. So he got to buy himself and others little time here.
And that was why he controlled his four monstrous weapons and let them take detours, appearing at the right moment, coming up from one direction each. The five of them were now forming a big five-star array, and that dark master was just in the middle of it.
"Do you think this will work again?" the dark master realised what came out from the underground, and noticed how they all were using a lightning element, burning it while using some sort of a technique.
"Yes, I believe so," William's icily cold tone landed, while he placed both hands together, closed in the fingers on each other, before he landed his hands as if he was hitting someone with a fist or something.
At the same time, the other five monstrous weapons did the same, all releasing lightning elements, while William muttered something in a weird tongue, ending it with these words: "... The lightning is my body, my life, the enemy of my enemies, the nemesis of darkness... Strike!"
It wasn't a technique, but a unique form of a small formation made up of five masters, using the same spirit element, Lightning.
It was known as the Lightning God Strike, and it was a pretty fierce formation. Its only draw side was that it'd deplete one's mental strength by a large margin. Using it in a battle would render anyone weak for a few hours before he'd regain and recover slowly.
Trying to push during such a weakness would end up with a very bad result. Not to mention the fighting prowess of anyone who used that formation would greatly decrease. Yet William had to risk doing it.
He had to either flee, fight and risk his life and death with that dark master, or use this formation. As his enemy was using darkness, then he knew that enemy wouldn't keep his scary fighting powers after using this formation.
The moment he shouted these words and the entire world around the dark master changed and became bright blue. The dark master already surrounded himself with a thick layer of black fog, protecting himself from any incoming annoying lightning elements.
He was sure whatever William would use wouldn't stop him, and he soon realised how greatly mistaken he was. That teenager didn't use the same level of power he used all this time against him but showed a much higher level of strength.
The moment he got engulfed in that bright blue storm-like cloud, he could hear sizzling sounds coming from all over him. He knew his darkness protective shield was getting eaten away. And that was just the beginning of the worst for him.
The next minute, tons of lightning already struck him and that darkness clouded.