RedGiant : Yell through the window that you're not here to hurt them! Let them know that you will let them leave in peace if they get WhiteDwarf a new arm.

Uh oh! They seem really scared... Maybe they're worried about WhiteDwarf's arm! You put on your best diplomatic tone, like you did with QuarterMaster, ChiefMedicalOfficer, and the others. You'll make sure the Roboticist understands you're not running from a disaster or anything!

RedGiant: You.
RedGiant: You.
RedGiant: Running won't help.
Roboticist: AaaaauuuUUUUUH!!

You're never sure what that noise means! But you'll just assume it's an affirming sound. He's so stressed, though! You'll just let him know what you need.

RedGiant: Only one way to get through this.
RedGiant: Arm, now.
Roboticist: Wh-what?!
RedGiant: You see this stump?
RedGiant: Do you understand the kind of... trouble that's happening?
RedGiant: Understand the only way for anyone in this situation to get safety?
Roboticist: HHHHH

That sound usually means they're going to help!

Roboticist : AAAAAAAAAAAAAAAAAAA