This is so much better than the watered-down made-for-Americans remake. It is supposed to be one long take, and it is for the most part. But there’s obvious places where the scene changes, especially when they go into dark places. When the camera points somewhere dark, they splice the scene.
It’s a great representation of real-world panic, for sure. There’s a good bit of filler, but for the most part it is used well: to set up the moments of terror. I like this more as a standalone film; I don’t agree with the direction it went with the subsequent movies. Although they have their merits as well.