Overall a very good movie.
I didn’t like only two things:
the face’s look of Feral, and the final fight of him against Naru,
it wasn’t bad, but could have been done a lot better.
Maybe showing Feral’s POV to remind the viewer that he couldn’t see her most of the fight.
Btw,
the mask that doesn’t have the “breathing” part it’s not an error, it just confirms that yautja do not need a rebreather to breath on heart, and City was using it for other reasons, maybe for healing etc seen the holes he had.