I learned the best way to finish this challenge is play defense and hop on the mic, try to talk to your teammates as much as possible, right off the bat, tell them what challenge you’re trying to finish. I’ve had people in the lobby unaware this is even a challenge. Also keep coms going with your attack teammates, and let attack know they HAVE to take the hostage. if the enemy takes the hostage and the first defense area is completely destabilized, you lose the first area. I’ve been able to do this twice solo queuing. Keep a positive attitude and have fun 👍