You will raise your Face Level by completing Favors, Races, Drug Bust and completing Martial Arts Club fights around Hong Kong.
•Favors are marked on the map as yellow circles with a black silhouette. These are at random and spread out through Hong Kong. And will unlock as you progress in your game.
•Races are marked as orange race flags. To unlock 2 specific races you wil lned to take Sandra out on a date, and you will also need either a class A B C vehicle to compete in them.
•Drug Bust are marked as dark blue shields. There are 17 of them.
•Martial Arts Club are marked as orange fists. And have 6 waves of enemies.
•Getting a massage will increase your Face leveling
•Wearing certain clothing items, glasses, watch, bracelet, etc also help increase your Face leveling.
NOTE: There is a DLC in the market place called Top Dog Silver Pack, which give you a boost on Face, Traid and Cop leveling. And it DOES NOT void any related achievement.