I have not seen the film, but I'll try to predict a few scenes...

I haven't viewed the trailer either, so my guesswork could be completely off here.

1. All the action scenes appeared in the trailer.
2. Little or off-screen gore during the zombie attacks.
3. A fight-training montage.
4. A man scoffs at a woman's fighting capabilities and is subsequently thrown to the floor by the woman he mocked in a series of jujitsu style moves, or...
5. A man scoffs at a woman's fighting capabilities and is subsequently saved from a zombie attack by the very woman he mocked and comes to realize that women are just as capable as men.
6. Mr. Darcy and Elizabeth cross swords at some point, à la Sonja and Kalidor (Red Sonja, 1985), and have a snog after much faux-hostility to one another.
7. Two contrasting scenes involving a lavish ball and zombie fight are played side-by-side to illustrate how Georgian-era women are expected to behave.
8. The zombies aren't the real villains.
9. No pride or prejudice.
10. The film was a turkey.

How many did I get?