Artemis was startled when the thing fell forward--so startled that he took a step backwards. He still had his scalpel in had, but was still unsure of how he could help.

The only obvious weapons this monster has are its claws. If those are disabled, defeating it should be child's play. Artemis was hesitant to act though, as the monster was flailing wildly. Right at the moment Renji brought his radio down on the monster's head, Artemis aimed a wild swing of his flashlight at the monster's right claw--putting as much strength into it as possible. The boy was hoping to injure the thing's arm or hand or whatever it was.

At least he was trying to help now.