This quote comes from the narrator or the character of Frith and is said to Hazel. The full quote that is said to Hazel is as follows:

All the world will be your enemy, Prince with a Thousand Enemies. And whenever they catch you, they will kill you. But first, they must catch you, digger, listener, runner. Prince with a swift warning. Be cunning, and full of tricks, and your people will never be destroyed.

I am not too sure that the quote you have given uses any stylistic devices apart from the various ways that the narrator names Hazel using such titles as "Prince with a Thousand Enemies" and "Prince with a swift warning." The naming of this quote seems to emphasise the danger that Hazel is in whilst at the same time offering hope of the various attributes that Hazel possesses to help him escape that danger. Note the way that the narrator addresses Hazel as "digger, listener, runner," emphasising those very qualities that will help him to escape and survive. The quote therefore captures the very real danger that Hazel faces, but at the same time the hope that he has because of his personal attributes that will allow him to survive that danger.