Blinking in this new environment, Rupert gapes, "Payload!"
He turns and yells through the door, probably most unwisely since who knows who could be hearing them, "The room is safe to walk through, come this way quickly!"
After telling his friends he'll do a little skip and dance, he's never been one to grave rob before, preferring high society mansions and the like, but he's heard rumors of some of the wonders these tombs contain.