Clear Sun Ce's Musou Mode. See "Zhao Yun", above, for details.
1 - Yellow Turban Rebellion
2 - Si Shui Gate: Lu Bu will appear towards the end of the stage; it's best to evade him and defeat the commander.
3 - Jing Province
4 - Wu Territory
5 - The Trials of Sun Ce: Just keep killing the officers as they appear.
6 - Xia Kou