I the kobold is down, Arden moves diagonally forward to his right and one more square forward (move). The he lights up the sunrod to lighten the dark corners (20 foot radius of illumination for four hours; i'm guessing a minor action to activate) and readies an action to interrupt any foe to come out nearing or attacking (standard).
The sunrod should lighten up the dark corners in the chamber. Is there something worth of note there?