This movie starts off with the main characters talking and introducing the plot. Fair enough - so does any movie. However, this goes on for over an hour (during which they do nothing but talk), by the end of which you'll most likely be asleep. This is made worse by the absolutely awful English dub, making it almost unwatchable.
About halfway through the film, the scene changes dramatically to a hospital, which is cue for an hour-long gun-fight. Now, there's nothing wrong with a gunfight in a film, and some of the scenes are very stylish - but the sheer length of the thing means that you'll be struggling to stay awake near the end. Since all the characters are wearing similar clothes, no-one really knows who is on who's side and it ends up as a all-on-all deathmatch, with people randomly shooting each other and the civilians.
Worth watching the second half for a laugh, but don't try and take it seriously.