make an action scene with firstly, then, and, or finally

misuse of "firstly"

Firstly, the hero charges towards the villain, dodging their first strike and leaping over a nearby obstacle. Then, the villain pulls out a knife and lunges forward, but the hero manages to grab their arm and twist it behind their back. And just as the hero thinks they have won, a group of henchmen appear and surround them, forcing the hero to fight them off one by one. Or will they? Finally, after a grueling battle, the hero emerges victorious, standing tall as the henchmen lay defeated at their feet.