Read the Book
I am a fan of the movie, do not get me wrong but if you are a fan of "The Ice Harvest" movie you should really read the book it is based on.
It's not a novelization of the movie, it's an actual seperate novel and I have to say, fan of the movie but the book is better.
You can get the softcover book at Amazon (Cheap, which is what I did)and they do have an e-reader version.
There is enough change in detail and other things which if you are a fan of the movie I think you will really like the book