Mark T’s review published on Letterboxd:
It took long enough for Marvel Studios to put out a "no-two-ways-about-it superhero movie masterpiece", but we finally have it with Avengers: Infinity War. It is the kind of movie that so often flirts with concepts that could easily fail under the wrong hands - mainly the handling of its massive cast of characters and a few rather downbeat plot turns - that it constantly stuns you whenever it executes these with such aplomb. While a few characters are given less screen-time than some would like, the movie manages to achieve the near-impossible juggling act of giving the majority equal importance. There's also the fact there is a genuinely layered and intimidating villain in the form of Thanos, and how he lives up to the legendary villain status built up since The Avengers. Not to mention, this is the one MCU film whose quippy dialogue miraculously adds a sense of dread for what is to come as opposed to simply undercutting said drama.
I have no doubt that multiple viewings of this and the upcoming Avengers 4 will further enrich my first-viewing reactions - at the moment, it is difficult to put into words how I felt about many of the story beats. I also have no doubt this is the one of the most emotionally engaging blockbuster movies to have come out in quite some time. I cannot believe I am saying this, but this might very well be the Empire Strikes Back of the 2010s in terms of being a near-perfect crowd pleaser unafraid to go into downbeat territory.