The easiest way to add multiple titles is to simply repeat .header(headername,headervalue)several times after.given()
given().
header("Id", "abc").
header("name","name").
header("","")
...
You can find different ways to pass headers using the REST-Assured framework in your test suite in github link .
Edit:
To check the status of a response in Rest-Assured:
expect().statusCode(200),log().ifError().given()......
, github link