Slay 200 Blackrock Invaders. If you should lose your vehicle, use the Horn of the Callers to summon it again.
This is it, <name>. This is where it hits the fan. Where all the pieces come together.
Strap in, and come with me. We're going to go talk to Acride and call in that favor that he owes us. Then we'll stop this invasion of Redridge before it even starts.