The key to success? Me yelling "GO GET FISSURES" in vent every 5 seconds. Also, the maze was a joke; two left turns and you're out every time. Really Blizzard? You could at least randomize it a little.
You know how when you get into a really fast car all you want to do is push the pedal all the way to the floor? That's literally how I feel when the tank pulls a large mob and I look at my Fire and Brimstone button.