Palpable Fear
To me the execution scenes created a strong sense of fear and disturbance. I cant remember feeling this in another movie. Not even another JC. Its just so brutally insane how they kill these people while cheering and shouting. Then later when one of them walks by a window pausing to check if there are enemies there with that wierd makeup, it was scary without them really doing anything else except assaulting the survivors for the rest of the movie.
It also created a strong sense of comic relief. An example is when Jason Stathams character,right after witnessing the killings, says "we have a situation here" I was saying "you are damn right you do!!!". It was an understatement, I would have ben freaking out at that point.
I thought the fear created by the baddies was one of the strong points of this hotly debated movie. For me its an AOP13 remake with alot of gutsy visceral parts that was refreshing since his other recent films didnt do as much for me.
That is all....