Derek Elley at Variety gives the film a very good review, saying:
From the initial train holdup through a shantytown gun battle to a 15-minute desert flatlands chase that's a jaw-dropper, pic maintains an ironic grin that leavens the heavy discharges of ordnance and continuous roundelay of faceoffs.
Also nice to read in Derek's review that Jung Woo-sung's performance holds up, as there have been rumors that Lee Byung-hun and Song Gang-ho were much better than Jung.
One quibble with Derek's review, though -- why does he call the movie the "most expensive South Korean movie to date"? Uh, D-WAR?
I will add more reviews as I find them.