The plot is ridiculous and unbelievable and the acting is even worse. The plot drags on and on and makes no sense. Don't waste your time watching this.

No pun intended - the movie tells a quite intriguing story. And yet it seems to focus more on the technical aspect of it (all being shot in one take - at least that is what it tells us). I did not check if that is true - nowadays you can make things look like they are being done in one long take, while you edit and cut at certain places.

Again I do not think it is that important. It looks good for sure, but the movie may annoy you with the whole who did that and why did they do it. We also have a few red herrings - and may guess wrong a few times. Just to get a resolution that is quite ... well out there. The ending itself either is able to save the whole thing (again no pun intended) or kill it off (another pun?) ... it is going to depend on how you feel about the twist ... and the story ... who is likeable and who has earned the audiences sympathy you ask? That's a good one.

Mostly one shot but unless you can get a camera to go through glass without breaking it does get cuts. Note the comes and goes from the "old surgery room". I am sure if you look closer other scenes without people on them were bridge for other cuts but it does give you the ilusion of one single shot. If you are more patient than I you may time the "timer" on the wall and see if it matches the actual time gap. In summary, so much potential for a great end but the story very much dissapointed me.