How did the dude get on the top of the watch tower?
Also, they roll in with the zombie delivery, which is kind of clever if not for the fact that the driver would be shot dead the second she leaves the vehicle. Yet the brilliance of doing so, in forcing everyone out of their covers and exposing them to gunfire, is passed up and they just leave instead.
Also, no one on the governor's side takes cover ever. They are firing 200+ yards and dead on accurate, yet the protagonist group gets more than a few lined up shots at the guy in the tower who is much, much closer and can't hit him till the very end. Then suddenly when zombies show up, they're back to one-handed running head shots from 20 yards out without a single miss.
Gun fights aren't new. War movies have been doing them for a long, long time. You don't need stupid shit to make a gun battle interesting.
Finally, I must have missed the episode where the governor overtook an ammunition factory. Post apocalypse and he's firing AUG ammunition like it's manufactured from the plot holes of this show.