I didn’t like that Rey made two connecting strikes against Kylo that looked like she had cut off his leg, and then killed him with a head shot. Instead, we just see part of his outfit get cut off, and he gets a cool, Anakin-like scar. The way it was shot and choreographed, it didn’t look like those would be graze wounds.
Worst of all, it took me out of the film when she suddenly gained Force knowledge at the perfect moment, twice. Without any training whatsoever, she suddenly knows the Jedi mind trick, and later, how to successfully fight off a Jedi and Sith trained warrior. I liked how the OT was realistic in some ways. Maybe realistic is not the right word, but they avoided cliche’s at certain points in order to make what’s most a typical fairy tale story, fresh.
For example, despite Luke being the hero, we don’t a chance to see him go King Arthur, and kick ass with is father’s sword. Luke doesn’t end up getting the girl (and not because Lucas changed it to her being his sister). And Luke doesn’t magically save the day when he first confronts Vader. He not only loses to him, but loses his left hand in the process.