Two of the deaths were a little unbelievable as they have only done 2 movies.
I get the whole father son thing, took me a second though.
I think the ones who died beforehand are actually dead (maybe not Gamora, we seem to think she's stuck in the soul stone in a way) but the others.
We went at midnight last night and the whole cinema was laughing, gasping and no one barely said a word at the end, also barely anyone left before the credits which was great to see.