You're right spinner, I think that attack scene in the hospital is the only one which is not clear. I can see like you, the alien rises from behind the man, it grabs him, drags him to the floor, and then all I hear are some screams, and they shoot the alien, and lots of acid is seen. Can anyone see how that guy is killed? I'm guessing a head-byte or something like that. I'm just guessing. But there are scenes that are clear, like, when Dallas is hanging upside down, I saw the aliens coming on the roof, and in the hospital, after Dallas shoots the Predalien, they run after it, and then the camera moves to the right, I could see another alien over there. These two scenes were the ones I couldn't see in the theater. But overall is a good movie, except for the script. The plot was good, I liked the idea, but the lines in this movie, were not that good. Peace.