How many do you think they could take on in a single wave?
The rules being either one has to die and the kid has agroed the chimpanzees. The child is in their house and has the same resources and prep time.
Bonus: here is the Wikipedia page about the Gombe Chimpanzee War.
The kid had friggin gun. Airsoft, but still, he proved to be a great shot and its not hard for him to get his hands on a real gun