Use the following trick to obtain Lu Bu's third costume, from Dynasty Tactics. Clear all seven Musous (other character). Make sure your original Dynasty Warriors 3 saved game file is loaded. Set the game on the very hard difficulty setting. Enter free mode on Chi Bi, Dong Zhuo's side, using anyone except for Lu Bu. A silver costumed Lu Bu will appear, from Dynasty Tactics. Defeat Lu Bu and Diao Chan to unlock Lu Bu's Dynasty Tactics costume, a special Chi Bi stage, and a new song. To get the Special Chi Bi stage, choose it with L2 or R2, but you have to be on Dong Zhuo's forces If you want to play as the special Lu Bu, highlight Lu Bu at the character selection screen, press L2 or R2 and press Left or Right to select the gray Lu Bu. When the stage starts, the special version of Lu Bu will appear. After you clear the stage with the special Lu Bu, Lu Bu's third costume will be unlocked at the character selection screen when you press L2 or R2.