This series really has a perfect blend of "grounded" combat and balls-to-the-wall abilities.
You can clearly see that things can get even crazier, but it doesn't feel "unearned".
I really like Tarja's way of fighting... well, using bystanders is a dickmove, but I think she is only using the teams... but using sound waves to control the chemicals' dispersion is high-end stuff.
She, too, is a hell of a chemist.