I'd call it a cocktail mix of Mulholland Drive, Inherent Vice, Vertigo, The Long Goodbye, The Big Lebowski, and with a slight dash of Rear Window and Zodiac for good measure. It's an incredibly dense, bizarre, absurd, at times maddening film, but it's always fascinating and compelling. The cast is excellent, especially the great Andrew Garfield, who gives a very committed performance as the lead Sam. His character is definitely going to be a huge point of contention for audiences, as he's quite different from the typical hero of a film like this. His complexity and layered backstory definitely added a lot to the story.
As expected from the previous work of director David Robert Mitchell, all the technical aspects are phenomenal. The cinematography is absolutely impeccable, the score by Disasterpiece is a great ode to classic noir scores, the production design is endlessly creative and impressive, and the editing is incredibly effective at keeping a fun momentum throughout scenes.
Overall, this is a film that will warrant repeated viewings, lengthy discussions, and god knows how many analysis videos. It's a very thought-provoking look into the idiosyncrasies of Hollywood culture, the unfortunate overabundance of the male gaze and the ways in which we get obsessed and paranoid over meaningless dead ends. I'd hugely recommend seeing it.