You'll find enough about the movie in other reviews, so imma be straight here,talking only about how,not what..
First thing I'm not gonna tell you is that the film is mind bogglingly confusing, because you must already know that...
For starters, many major elements
of the movie are borrowed from Nolan's past movies, atleast till the first half, so it didn't feel that unique to me to be honest....
Still , visuals are great, story is entangling and the last half an hour or so we're simply awesome...
What I can't ever criticize are Nolan's endings, and this one has to be my favourite ending in a movie ever...
Just go for it, those 2.5 hrs are totally worth it