Am I the only person who, for the Elizabeth Greene fight, just kept hijacking tanks? Shoot at the base where she goes into the floor and the splash damage will hit all three tendrils. All the time you're in the tank, you can't be damaged and the Infected just bounce off you. When the tank is destroyed, wait until she shoots her rubble stream and then immediately go for another tank that spawned while you were fighting Greene. The wave attack comes just as you crack your knuckles in the hijack animation. For best results, circle her constantly.
Took me... 10 minutes? Including working it out? The final boss is far harder to do, but is a much easier strategy
Took me... 10 minutes? Including working it out? The final boss is far harder to do, but is a much easier strategy