I should state up front that I have not read the manga before viewing this film. I loved the first half hour. The slowly unfolding story of why the people all appear in a room together after "dying" is excellently done. It is unhurried and takes time to focus on the variety of human emotional reaction to the horrific situations the "dead" people find themselves in. The violence is shockingly done and done well. However, once we get the premise I felt that the story should have moved on a bit quicker. There was one mission to many. The basic premise was to arm "dead" people with amazing futuristic weaponry and set them against very nasty aliens in fight-to-the-death scenarios. This was all well and good. However, there were countless times where the person holding the amazing futuristic weaponry was a trigger-pull away from zapping the alien scum and inexplicably did not pull the trigger. Literally, point-blank, finger on the trigger, pointing at alien head situations. Instead they generally ran away from completely stationary aliens. This got really annoying for me. Particularly in the last mission where a statue, yes a statue, was evidently too quick for the people with the ray guns. I did enjoy the film but the suspension of disbelief got too difficult for me.