"levado" means "naughty". Yet "da breca" is an expression that most frequently follows this specific adjective; it is used to emphasize it. Depending on the context, you could use either proposals. If the sentence is a short one, like "Que menino levado da breca!", go ahead with "What a naughty, naughty boy!"; however if it is included in a longer structure, such as "Carlos Américo era um menino levado da breca cujo maior passatempo era matar passarinhos com seu estilingue," try "Carlos Américo was a very naughty boy (...)".