The plot twist was fine, but there were some things needed to be criticized

Rating: 8/10 (11 May 2019)

First of all, I'd like to criticize some things from the movie. First, what is up with the 9 seconds of black screen and followed with 34 seconds of the studio? Take note from other movie devs please. Next is, first scene, Thanos was supposed to kill half of the population in Asgard, but it appeared as if he wiped out the entire Asgard. What was Hulk doing before Loki said "We have Hulk" ? Hulk didn't bother lending a helping hand? and Thanos DESTROYED Hulk with only Power Stone, and yet at the end of the movie, Captain America can held Thanos' punch with his bare hand eventhough Thanos had already acquired 5 infinity stones.
Next, about Thanos' goons, they were never introduced to us and MCU (Marvel Cinematic Universe) never bothered to tell us why they are so powerful and why Thanos needed them when he is already strong himself. and Thanos asked his goons to find the infinity stones, but didn't he said "Fine, I'll do it myself" in the last movie? need a little bit of confirmation here. Hulk and Banner have different memories in the previous movie, but why it seemed like Banner knew what Hulk encounter?
It'll be too long for a review if I continue criticizing every single bit of this movie, but overall, its a good movie, I'd give 8 out of 10 because of the actings of the actors, and the plot twist, the story-telling, and this movie's hype, very nice editing too, nice CGI placement, and all.