Note: This image is not mine. I'm only using it for learning purposes.
Assuming we start from a 'correctly' exposed image.
I can tell this much:
Filled shadows to bring a low contrast look.
Decreased maximum white output to make the white less white (more grey)
Maybe decreased exposure
But i can't tell the color tones used.
I'm guessing its a duotone overlay, green on the highlights, and blue on the shadows........
But I can't seem to find the green and blue color values and saturations to reproduce such colors...
Or is there a well known lightroom/PS action to do something similar?