Kierre Stowes’s review published on Letterboxd:
Avengers:Endgame is what appears to be (but probably not) a conclusion to the Avengers saga. The movie is 3 fucking hours long!!!
I enjoyed it but I really didn't think it was so epic that they needed 3 whole hours to tell the story, especially considering a huge portion of the film is filled with one liners and comic relief. I can't say that it felt overlong while watching the film but after it had ended, I believe that the 3 hour running time was unnecessary. It wasn't boring but clearly was no "The Godfather" either.
There was also a confusing timeline and a few moments where I questioned the purpose of time travel. On a positive note, the movie did have heart and I did enjoy the conclusion as well.