Please check those that have already been IDd:
http://www.hkmdb.com/db/movies/images.mhtml?id=10687&display_set=eng

ID needed:
1. Local Boss


2. Sax Player


3. Bar singer


For cast additions:

4. Bouncer


5. Bar drunks


6. Arcade player


7. Savage's peons


8. Gambler


9. More gamblers (to either side of Koo)


10. More of Savage's peons


11. Another gambler


12. Social worker

6. Arcade player


Hung Wai Leung (洪偉良)