Last year, Rogue One introduced us to the tough and resourceful Jyn Erso played by Felicity Jones. She's the heart-throbbing heart of the film who gives zero fucks, takes no prisoners, and has more important things to do than cry about her problems. Not only does she lead a crew of thugs to save the galaxy, she stares down explosions like a boss.
While there's not a clear winner of the title "toughest nails" here, it would be almost impossible to top the classic fighting skills of The Bride (Uma Thurman) in Kill Bill: Vol. 1. One of the most memorable sword scenes in cinema is when she takes out an entire room of villains. On exit, she takes her leave with the coldest line of all time:
“Those of you lucky enough to have your lives, take them with you. However, leave the limbs you've lost. They belong to me now.”