If you want a good spoiler, search for issue #83 of the comic book --- issue #83 roughly coincides with Sunday's midseason finale.
If the show mirrors/follows the book, Rick will need to make a difficult decision as they wade through the zombie herd.
In the book, his decision involves an axe --- and wouldn't you know it, Rick is carrying an axe on the show (other than Sunday, has Rick *ever* been shown with an axe?).
Compared to the book, the show has toned-down (or outright ignored) many of the brutal/evil/savage scenes. So I wouldn't be surprised if the show changes a few details with Rick and the axe.