Respuesta :
It shows urgency. It creates an insistent tone. That is the main purpose of having exclamation points. It produces strength on a given sentence, statement and expression.
The many exclamation points and imperative statements of the speaker on "beat! Beat! Drums!" express a sense of urgency, urgency, haste.
The speaker is expressing an order and this needs to be done urgently, as soon as possible because it is an emergency where agility is needed for its resolution.