Contaminated Breakthrough

I don't know what it is, but I've played like 8 matches as attacker on breakthrough on the new map and can never seem to get past the third sector with the A in the trenches and B in the hangar. I think there is way too little cover and also giving defenders a tank is kind of ridiculous.

Of course doesn't help that most players don't know how to strategically flank/push or never change to engineer to help take down the tanks. Can't help but think there's gonna be some adjustment on this map in the next few weeks.