I didnt get the ending at all but I think it was worth seeing. My chief complaints are that the:
1) dialogues were horridly wordy.
2) way too much skin texture...hey is that a zit on his face
3) ending was confusing
4) product placement of cadillacs
5) that entire scene in which they make zion look like it is just one big club in a cave
6) fighting is amazing but it gets a little excessive
7) the dream foreshadowing the ending
8) the falling down shooting was too slow
9) to be continued ending is just not creative

Hey can anyone explain the ending; which door did he pick? Who is the guy in the adjacent stretcher?