Being an Avenger means coming together with other heroes to face impossible threats. Sometimes, those dangers arise on multiple fronts, and individual members of Earth's Mightiest Heroes have to endure and find a way to triumph on their own. That's exactly what happened in the current "Citykillers" arc of Avengers, which came to a close in Issue #6 by writer Jed MacKay and guest artist Ivan Fiorelli.
Source:https://www.cbr.com/earth-mightiest-spoilers-mackay-on-the-avengers-endgame-against-the-ashen-combine/