Don't buy if you're expecting good gameplay about the Avengers advertised: Captain America (who is lacking from the game), Iron man, Hulk, Black widow or Thor (and for those who are not interested in Kamala). You will not enjoy it.
I enjoyed certain characters combat, but it was limited. You are given 3-4 skill trees in 3 seperate tabs (9-12 skill trees) and just going through the campaign you will not complete a set of skills. Which is a bit ridiculous and shows how lacking this game is in content (the campaign is 10-12 hours).
The character development was okay. I can't say the game made me care much for Kamala Khan, and the campaign if fairly short. Even with much of it being walking, running and sneaking around.
There aren't any plot twists where you didn't see it coming which was unfortunate.
There also aren't many minor boss fights (the ones aside from the main boss).
The main campaign does contain a main bad guy (Monica/AIM and Tarleton/Modok), but the games focus seems to be on Kamala worshipping the Avengers, the Avengers have some drama and a fight, and then Kamala talks them all into being friends again.
Gameplay itself is a bit glitchy, jumpy, character skins flicker and things like pressing the button to cancel a selected mission and it will always make you play that mission without fail.
There is a lot of patching for them to do.
Overall I would have to say this is a fairly average game for nowdays, and I would say this is a children's game.
It's nice that people enjoyed the game and Kamala's story, I just didn't. I am not hyped for the next one at all so won't be investing into it.