Chris FT’s review published on Letterboxd:
Tenet brings another puzzle of epic proportions, resulting in another bright notch in the filmography of Chris Nolan.
High scale action mixed with a brain twister of a time concept makes this a challenge to put together; a real "turn on the brain" type film. The first watch is definitely a "don't try to understand it, feel it", to quote Clémence Poésy's character in the film. Like most Nolan films, Tenet will require multiple rewatches (with subtitles, given theaters stupidly don't give them to us) to unlock more details surrounding the general story and what was at stake.
Elizabeth Debicki, John David Washington, and Robert Pattinson were wonderful leads, as Nolan always churns out great performances by his cast.
All that being said, Tenet might not be as engaging as other Nolan works, such as Inception (2010), given that being the lone screenwriter is his Achilles heel. The best of his films were with Jonathan Nolan writing or co-writing (haven't worked together since Interstellar, 2014).
Make no mistake, this film is up this writer's alley, in which there are so many questions and a brain "turned to scrambled egg" (to quote Tom Hardy's Eames in Inception).