After her critically lauded performance in 2011sYoung Adult, Charlize Theron was hunting for a specific kind of project.

Lorraine just is, and I love that about her, Theron says.

Playing her, however, demanded a physical commitment beyond anything Theron had ever attempted.

Atomic Blonde (2017)

Jonathan Prime/Focus Features

Even he was astounded by what his leading lady could do.

To have the gift to do both?

And theres plenty of it inAtomic Blonde, which has slick, stylized visuals and an 80s-discotheque soundtrack.

Atomic Blonde (2017)

Jonathan Prime/Focus Features

Other people may have thoughtTinker Tailor Soldier Spy, but I was thinking punk rock, Leitch says.

She certainly did during the intense months of physical training before shooting.

She clenched her jaw so tightly, she cracked two teeth.

Atomic Blonde (2017)

Jonathan Prime/Focus Features

McAvoy was awed by Therons determination.

Instead, his character got a cast that got integrated into the plot.

This is what happens when you get a fight choreographer and say, Go make your own movie.'

Atomic Blonde (2017)

Jonathan Prime/Focus Features

Leitch, for his part, credits his leading lady.

I dont need to do 25 edits to make Charlize look formidable, he says.

Take a look at the featurette above for more from behind-the-scenes ofAtomic Blonde.

Atomic Blonde (2017)

Jonathan Prime/Focus Features