There are some armors with specific type defensive bonuses, but its such a fiddly bit of minutiae, I've never once bothered to compare armor to enemy weapon type, or factored in specific defense bonuses on magic armor into my gearing considerations
No tile bonuses that I've seen, or any special tactical combat terrain at all
Seems to be, the one that drives me nuts is the on-map animation that always plays if you auto-resolve a fight, even if quick moves are turned on. Have to go to the cloth map to skip it.