This is a non-stop action film that emphasizes the stunt-work necessary in gun battle scenes - bodies fly off every which way, bouncing off barrels, lightposts, tables, cars, smashing everything in their way. The stunt-work really is quite incredible - perhaps not surprisi9ngly, given that the director is Chen Chi Wah, who worked with a Jackie Chan on several of his early chop-socky star vehicles.
However, there's a big weakness in the film, namely the story - it's very weak, with characters that are not terribly likable. Consequently the presumably tragic finale (no one survives) actually comes across as somewhat anti-climatic - do we really care if these characters lose their lives? The weakness in the story also makes the occasional comic elements wholly out of place - the comic relief to a film like this should derive from the personalities of the supporting characters - but unfortunately, they haven't any.
Ohn, well - its just a pure action film, after all; and as such entertaining for action fans at least for one viewing (but doubtful that you'll care to see it again).