So I just played a scout event that had the arena cut in half. The barrier was a set of wooden gates set between two force fields on either side of the gates. Each force field was held in place by two black stone looking structures. I couldn't see any levers to open the gates on either side of the barrier. All attempts to smash the gates failed. All attempts at smashing the structures holding the force fields failed. It seems impenetrable. Any tips? I am obviously missing the trick here. Also, what is the point of the health ups offered in the arena battles? They give you such a ridiculously small boost it's not even worth having. They onlyever seem to come out just before your opponents move and when that very next assault is about to take you out!