Elijah Hastings, Lincoln Harrington, and the others took advantage of this opportunity to set up a circle of fire, enclosing everyone within it.
Ultimately, the number of flammable materials was too low, and the fire wasn't very big. Surprisingly, the spiders marched forward a considerable distance, whether due to intelligence or some other reason!
Sean had some gasoline in his spatial realm and he decided not to hide it anymore. He took out a glass bottle of gasoline that he'd originally planned to make into a molotov cocktail, poured half of it onto the fire, and then stuffed a strip of cloth torn from his clothes into the remaining half, set it on fire, and threw it out.
The homemade incendiary grenade proved effective, and the screeching spiders were burnt to a crisp, their charred smell wafting over shortly after.
Sean had taken out all his gasoline from his "backpack"; hence, no one was suspicious in the spur of the moment.