So the start - the backstory - was boring. Spent 30 minutes waiting for the movie to start. No need for it. Could have been said in 30 seconds instead of 30 minutes.

The middle part when Thor is on Earth was very good. I enjoyed the character and how he interacted with the humans and how they interacted with him. That was fun to see.

The character story arc was good to this point. Then came then finale which, again, was boring.

So a bad start and a bad finish with a good middle. There is some promise here for a better sequel but this is not a good movie.

Mediocre = not due to idea / character (Thor) but due to plot / storytelling not being up to par.