Encountered this bug early in the game where you're sent to find Valeria and get ambushed by the Republican Alastor assassin. As you can see in the video linked, he either doesn't use his moving animations or they're non-existent. Not a big bug, but it sure took me out of the game for a bit.

Youtube Video: https://www.youtube.com/watch?v=shCYkbsZoB4