Don't listen to the Hype. It's awful

After playing with our expectations, this turns out to be a very different sort of film.

I think this is a new genre that they're all sort of working their way through it and haven't got all the kinks worked out yet but it's a genre that works for me.

The plot isn't so bad, but the pace of storytelling is too slow which makes people bored. Certain moments are so obvious and unnecessary for the main plot. I would've fast-forwarded those moments if it was an online streaming. The ending looks like implying a sequel, not sure if this movie will get one

Another Bunker style movie. And while I do have a heart for them, there is one major ingredient missing here, that would make it really good. Don't get me wrong, I don't think it's bad, I'd say it is decent, but without any real charisma from our main characters, the connection between the viewer and the "heroes" is missing.There are a couple of stabs at giving at least one of them a bit of a backstory (it's the "expert" in underground tunneling), but it's not enough to make us care too much. We know that something is seriously wrong with a bunker like that. Especially when Nazis are involved. So while the period/time piece does work, and the effects are good for a low budget movie, there could have been a better result in other departments. If you just watch it to pass time and/or are a fan of close spaced horror/action, than you could do worse