Kale kept everyone close together as she tried to think of a strategy. There was a limit to their Magic, there was no way they could simply use the Night Vision Spell endlessly.
Kale calmed the man who had lost his hand down.
They were completely surrounded by those monsters. From what Kale could gather from the their actions, it was going to be difficult to get past them.
It appears that the monsters react to light. The Glowstones, for example, were specifically targetted. Those monsters attack the light source, eliminating whatever was in between their path and the light source.
With their stick-like bodies, they were fragile, but were capable of cutting off a person's hand.
The Adventurers was breathing shakily as he grasped his bleeding arm.
The second thing Kale managed to gather was the fact that the monster reacted to touch. When Kale threw the rock, the monsters had all gathered to attack the rock.
Perhaps they moved as a shared mind, Kale did not know.