Chapter 5, "I Can Hear You Laughing", has a few, amidst all the Nightmare Fuel.
Petunia gets one when she runs past two guards, sneaks into a locked room, and saves Todd Allison.
Cyril using either a modded sniper rifle or a shotgun without a scope to gun down four men from a distance definitely qualifies. Yes, it's scary, but it drives home how efficient he is.
The reveal that Petunia originally came to Melbourne pretending to be a boy and following her brothers so she could prove she was just as good as them is pretty awesome for her since up until then, the reader probably wouldn't have guessed that she had the guts to try something like that.