The ending (SPOILERS)
I'll start by saying I watched the movie so I could watch its Pitch Meeting, so I had no idea what it was about.
While watching it, there was nothing really interesting about it as it was just a mashup of many things we've see before.
Pretty early on, it became clear that if the movie was situated on Earth 65 million years ago, that the climax would be a huge asteroid (otherwise why bother mentioning the date).
Was the asteroid supposed to be a twist for the ending?