There's a glass bit, but this injury doesn't impair the drone from gauging the guy's exact distance and direction from Cam and reporting it to his computer so Cam can drug him.

... How about rocks? And more arrows? The people with pointy objects (and the people without pointy objects, and the small children) are not that enthusiastic about surrendering anything to evil killer robots, even prisoners.

Yeah okay he will just drug them all until the prisoners can climb out without further obstruction.

The prisoners cheer, and some of them will do this! One more vengefully-inclined fellow will see how cutting their throats while they sleep works.

That works like he gets drugged too. "Will someone please carry that guy?" says the drone.

... Everyone is fantastically confused. Some of them will try to run towards the voice, others will scream for help, and some will run away because it is clearly not on their side.

"Look," says the drone loudly, "you're free to go but I recommend regrouping with the other hostage and the rescuer to get toted to Profectus instead!"

... Well, some of them figure that makes sense, and some of them figure this is a trap and they just need to grab a water skin and head down to the railway and wave down a train, and then they don't need to interact with the weird alien that doesn't act like other weird aliens.

(A couple of people will haul the unconscious hostage, though.)

"Thank you!" Cam says in the same voice as the drone when they come into view. "Over here!" Wave wave.

One of the hauler-people observes that the Profectus soldiers are tied up on the ground and the Kina Basar are still allowed to have weapons and drops the guy and bolts.

Well, now that he can see them he can grow a little cart under the unconscious guy and trundle him over.

This will work? Everyone in this scene except Cam is scared and nervous and wondering what Cam is going to do next, though most of them are trying to avoid showing it.

(Or unconscious. Some people are unconscious.)

"Okay. These guys and you and the soldiers all going to Profectus sound like the next step assuming we rule out all plans that involve anyone dying for any reason?" Cam asks Azlisa.

She draws a deep breath. "I think so."

"Great. How far is it from here and what approximate heading as the crow flies?"

She thinks it's about units-that-translate-to-about-three-hundred-miles that way? "The iron roads leads straight to it."

"Cool. Will I be able to find an open space about two-three times the size of a -" He looks at the surviving buildings. "Four-five times the size of a house?" Also while he's at it he's going to patch up the buildings that look like they would benefit from this and drop a few sacks of lentils and oats in a convenient spot because you can eat those without cooking fuel and this is a desert.

Technically, this is only semidesert.

"Yes," she says. "Profectus is in the middle of a desert." 

(People will jump when he starts fixing things. And when the sacks appear.)

"Great." Shuttle pops into existence. "All aboard as are going aboard!"

Everyone still looks nervous. (Especially the Profectus soldiers, who are all still tied up.)

"Shouldn't we take the iron road?" one of the former hostages suggests.

"- I have no idea what the train schedules are like around here, if we hike all the way to the railroad and I materialize a train car how will I know if someone's coming the other way ready to have a head-on collision? Besides, this is faster."

Another former hostage will make a break for the railroad, running like mad straight south.

Everyone else is either Azlisa, who is pretty sure Cam doesn't want her dead, or injured enough to want to not run. "I understand," she says. (She feels like she ought to be trying to make a GIGANTIC FORTUNE out of this, it doesn't look too hard to figure out, but for some reason her brain isn't working all that well and it seems extremely difficult to try to innovate, under the circumstances.)

"Do you want like a canteen or something?" Cam yells after the departing person. If nobody else is running he will usher people onto the shuttle.