No one other than Nolan can dream of venturing into something like this and deliver something so amazing. It's not the typical Nolan movie in terms of complexity, visuals, and cinematic grandeur. But it's a whole new feat on its own. It's deep, intense, intellectual, and engrossing; taking us back to the times of Dr. Oppenheimer. It's a deep dive into the great scientist's mind. As far as performances are concerned, Cillian Murphy deserves an Oscar for this career best performance. Robert Jr., Emily, Matt Damon etc. have all lived their characters and delivered brilliant performances. On the negative side, It could have been a bit shorter, and could have shown us more on Oppenheimer's relation with his wife and how it evolved into what it was towards the end.
PS: Those who expect fireworks, explosive action, and other such stuff will be in for a huge disappointment. Appreciate the movie for what it is, or better don't go to the cinemas and torture yourself.