I mostly enjoyed this movie however the more I think about the whole shtick of the film (being the fact it was done in 'one take' the less impressive it is. Some of the 'hidden' cuts are so obvious they might as well have been edited conventionally. For example multiple times the camera will clearly cut behond cgi elements or when the characters go into a dark tunnel and the screen goes completely pitch black. Also there is literally a cut to black halfway through the film so they didn't even stick to the whole 'one take' thing. George McKay is great in this and the rest of the supporting cast are also good. There are also some great set pieces. I enjoyed the film a lot, but the more I've thought about it the more the concept has soured.