Indiana Jones used to be fun because it was 'semi-believable' action with characters that you cared about. Maybe the stories were fiction, but for the most part people were not flying or able to withstand a bullet (or nuclear blast). Lucas and Spielberg managed to ruin this franchise by taking away the things that made us love it.
Biggest issues I had: Indy moonlighted as a spy during WWII??? He can survive a nuclear blast in a refriderator? Mutt can swing through the forest with the greatest of ease at 40 mph to keep up with cars and summon monkeys to attack his enemies? Frankly, I was ok with the premise of the movie and who the gods of ancient cultures were, but they even took that too far in the end.
And for Karen Allen... Same actor? Yes. Same character? No. People change as they get older, but that was not Marion. Indy? He is more or less what I expected, but apparently with superhuman strength that can resist nuclear fallout. Mutt? Forgetable. John Hurt's character was fantastic though. One of the few upsides of this movie.