They nailed the behaviour of the characters, actions, looks, all perfect. The detail put into characters such as Iron Man and the Avengers, Spider-Man, Wolverine and the X-men and so many more famous comic book heroes and villains was awesome. I also enjoyed the Lego Lord of the Rings, and Lego City Undercover so Lego games had regained my faith.
I wasn't particularly keen on Lego's previous superhero game, Batman 2: DC Superheroes, but I had a lot of faith in this game due to the incredible roster of characters, the immense scale of the hub and the epic story built with action and comedy. I love Lego and Marvel, and if you add the two together, you end up with brick-smashing awesomeness.