After a short walk, the Dreadnought will plant itself outside the facility gates. Waves of Chaos will spawn around your squad , alternating between both sides of the gate and the nearby stairs.

There's one thing you need to know about the Duty Eternal DLC for Warhammer 40,000: Chaos Gate – Daemonhunters: it lets you use Dreadnoughts! That's probably going to be enough to convince 40K fans ...