While Vexar was busy fighting the boss, Grec, on the other side, was massacring all the spider minions.
'Spiders aren't really monsters that have good attacking power… to win a fight they have to rely on their surroundings very much.' He came to this conclusion from all the fighting he had done in the cave.
Along with that, Grec has noticed another thing. The spider from this cave tends to attack in great numbers… meaning they didn't really have great individual power.
[You killed the monster: Lesser Arachnid]
[You have killed the monster: Greater Arachnid]
[You have earned Exp]
[You have earned 1000 CC]
[...]
[...]
Grec didn't even have to spend too much energy killing the monsters. Before fighting, he had created a barrier separating the boss from its minions. And now he was slaughtering them like bugs.