What I believe actually happens is that the redirected four destroys the Stealth Bot, causing Volatile Parts to flip the Talisman, meaning that Expat takes 5 damage at the end of the turn; see the edited turn above.
Of course this doesn't affect the end result, and you all still win. Congrats!
So the key moments to that game were Adept cycling Barrage back, and the double unload. I don't even know how to explain Expat firing all those guns in one round. Maybe she was barefoot?