pretty good overall. It's just a show about zombies so you can't get too critical but one would think after surviving so long in such an enviornment it would be 2nd nature to clear a house prior to letting your guard down to the point you can't hear a walker coming up behind you. If you can be ambushed by a walker in a house at this point, you probably weren't going to last too much longer anyway. I would also assume time is important and every second they go without Michonne cutting the arm off was dooming him. Did they actually expect to have time to transport him back? and then what?