They hadn't brought down the beast yet, but they knew they were close to bringing it down completely.
The signs were there...I mean, look at how much it staggered due to the damage that was done to its core.
After making a little plan, a certain warrior with the fire ability jumped heading toward the beast's face. They'd already discerned by now that one of the beast's eyes had been damaged to an extent due to the arrow that penetrated it.
So they planned on damaging it some more so it wouldn't be able to make use of that eye to see anymore, they wanted to damage it completely.
If possible, they wanted to damage both of its eyes. When it can't make use of its eyes to see, killing it would become easy.
The warrior was still heading toward the beast's face, and though the beast was somehow disoriented, it tried grabbing the warrior in the air by swinging its hand.