After waiting for the right time to watch the last two episodes, that was just a disappointing piece of crap.
CDamm nails it, they should have shot that scene in a different manner, with the guy dropping the gun nearly immediately, pausing on Carl's face, and then having him shoot. The way it was presented, yes we get the implication that Carl did it on purpose but it was not shot well enough to indicate that he is turning into a younger version of Shane.
The scenes with Andrea attempting her escape made us shout at the TV about a half dozen times. She kept pausing and talking, while still cognisant that Milton would be turning into a walker. He even had to REMIND her to hurry up. A pitiful way to part with this pitiful version of the character. Nothing like the strong and sane female lead that was the rock of the prison battle in the original story.
When you're having to shout WTF at the screen more than once or twice an episode, the show is not written well. Neither my gf nor I have ever had a WTF moment in Mad Men, Breaking Bad, or Game of Thrones. Well, with GoT there was the beheading episode, but that was more of a shock rather than an angry "WTF are you doing, you idiot?"
I reread The Calm Before and Made to Suffer for yet another time a few weeks back. I keep wanting to reread this story just as much as Watchmen. I rewatch episodes of Breaking Bad and GoT based on their entertainment value alone. Yet when I tried to pull out my Walking Dead Season 2 BR set, I looked at it and sighed, imagining how many hours I would have to suffer through to make it to the finale. While Season 3 was a great improvement, it has no payoff in the end. It just leaves me with a sense of frustration and a realization that this show will never be as rewatchable or entertaining as some of its top drama competitors.