I do understand the above, the somewhat not sufficiently motivated nature of it, if I took it right. A little too scarce that the single motive is that door. Only one core around which it all is threaded.
However I think it is a remarkable achievement to have been able to film at the very location (and all with extras, vehicles, etc), even if its sadly starting to be a cliché about Pripyat. Still I think it will never stop being a thrilling issue and location. I myself actually still have a desire to once be able to go there for some reason. Very convincing and decent production, acting, photography.
The strange thing is that there is another "The Door", of 2009, with Mads Mikkelsen, what oddly enough tells about "an artist who loses control of his life after his young daughter's death."