How do you ruin dramatic tension?

Rating: 5/10 (26 October 2017)

Yeah that's exactly how you do it. Man, what's happening? Where's the villain? We've been following Hulk and Thor for ages, why do we still need to hear the same lame puns, see the same overused visual "gags"? It's not even slapstick comedy, it's stupid.
The movie's not unwatchable, but why would you ruin everything you were trying to build with those -not so good- characters to begin with? Please leave this to Deadpool, even the stupid GoG2 proved you have to draw the line somewhere. Why is Loki such an inconsistent idiot? Why are we spoonfed everything? It even manages to assume the audience are a bunch of dumdums for example by using the same "i forgot what my powers are, oh a convenient vision" twice, ruining the twist (or whatever it was supposed to be).
Bonus points: if you've seen the trailers, don't bother watching the movie, you've already seen everything. For the post credit scene, it's on youtube.