First of I've got to say that this is a masterpiece in combining a story with action. Yeah explosions, fighting and stuff - but you actually care about it all.

Secondly, here is my good/bad summary:

+ A damn good story! The conflict is built up believably and there is a reason for every choice a character make. It's a dramatic good vs good fight and you are conflicted in who to root for. There are several parallel stories, like the introduction of the new character Black Panther. Such parallel stories risk to mix badly with the main story but here that isn't the case. 10/10

+ Action (duh). Not only it's fantastic visuals, but it also help telling the story. If you love explosions and fist fighting: you'll love it. If you love fleshed out fights where you really feel something: you'll love it. 10/10

+ Cinemaography. What to say? The visuals perfectly set the tone of every moment 10/10

+ Acting. Very good. Every character feel true and relatable, you can feel their inner conflicts. 8/10

+ Spiderman, Black Panther and Ant-man. Do I have to say more? They are all seamlessly introduced and even Black Panther who has a pretty strong story arc are perfectly built-up without taking any focus from the main story. And by the way: this Peter Parker is my favourite up to date! :D

+ The blending of each element stated above is done so good. Great action scenes and a lot of storytelling tend to be difficult to blend, resulting in pointless action sequences and a lot of "character development" that feels out of place. This clearly isn't the case here. 10/10

Now my biggest (and only BTW) complaint about the movie is - ironically - about the story: it could have been even stronger. You do have a big conflict between good and good, but I think it's to much to call it a "civil war". So there were multiple things that split the Avengers up which I feel could have been built up even more, and possibly intertwined to make a greater impact, making the split more final than it were now.

So all in all: very well-made, very enjoyable with great action and story. Highly recommended! :)