Medical drama-style attention to detail when (as frequently happens here) people are hurt or killed. Certainly very gruesome, but so are many HK actioners. I thought this one was great. Just the right balance of slam-bang action, involving plot and character development.
A note about Stuart Ong, a veteran of dozens of cheap porns and bit parts. I found his performance quite compelling. Or is it just that he looks (in this movie) so much like John Hurt ?