Clearly Anthony and Joe Russo asked themselves this question when they took on the films Infinity War and Endgame. Then they probably uttered "fuck it" and went ahead and made them. And I'm glad they did.
If Infinity War is the rollicking epic, then Endgame is the smaller (for a movie like this), more personal story. It's a basic men-on-a-mission movie featuring super heroes who want to undo a terrible thing, and take down the ultimate bad guy. That's as close to spoilers and story that I will get into in this review.
Endgame is a hell of a ride. It's emotional, funny, exciting, and filled with surprises. If you've read the Infinity Gauntlet run in the comics you'll find new things to enjoy here, but have your theories validated. If you've never read an Avengers story or watched the cartoons, you'll still have a whale of a time.
Every part of the MCU up to this point is paid service in a satisfying way. There's plenty of pathos to enjoy, and the final throw down is a thing of beauty. I've always appreciated how the brains behind this franchise are able to balance the heavy and the light, and this movie juggles the two to perfection. I laughed, I cried, and I cheered. Entertainment doesn't get any better than that.
When you're able to relate emotionally to a movie about super heroes, the movie is a win. that is all.
Avengers: Endgame is an easy Good, and something to be enjoyed on the big screen again and again. I can't wait to see it a second time.