This is a fun superhero film. It has great acting, dialogue, and effects, all of which are essentials for a superhero blockbuster. Robert Downey Jr., Chris Evans, Scarlett Johansson, Mark Ruffalo, Jeremy Renner, Samuel L. Jackson, Tom Hiddleston and others all have great performances as various heroes and villains. Hiddleston's Loki is a great villain who doesn't overpower his opposition with brute strength, but with his wit. The script humanizes these characters and makes them all the more relatable to the viewers. The added moments of humor are a welcomed addition to an otherwise serious story. The set designs, whether CGI or practical, look great and help transport us into the heroes' world. This movie's action and spectacle are amazing. The fighting is well choreographed and often enhanced by context. This is not just a superhero film focused on big action, it has a lot of substance to it as well. Director Joss Whedon was able to craft a great comic book adaptation. Overall, I give this film an 8.5/10.