Akane's hand-to-hand fight with a golem. Unexpectedly badass for the little kid that was supposedly going to betray everyone.
In chapter 58 Samidare, after the Blues Drive Monster is destroyed, psychically takes over the debris and makes a humongous version of herself and fires the ultimate falcon punch, obliterating the biscuit hammer.
For the series itself, the entirety of the final battle with Animus. And within that the Beast Knights actually beating Animus on their own with minimal help from Samidare.