Already statedin the title but for disclosure, spoilers ahead...
Great film but in all honesty I think it's been overhyped. civil war, thor ragnorak and guardians were better Imo.
Was always going to be hard to do with so many characters in one film and despite being 2 and a half hours long it still felt like some were not given enough screen time and seemed to be nothing really at stake as it's widely expected that the ones that died at the end will return.
We know for a fact some will return because of planned stand alone sequels like spiderman, black panther and Dr strange.
Humour was great, the groupings of characters together was really well done too and led to some great clashes of characters. Thanos stole the show, easily the best villain we've seen in the mcu.
I really enjoyed ant man but the sequel and the captain marvel film which are both before avengers 4 will seem a bit underwhelming as we eagerly await avengers 4.