How to get the Viper Blade
	1. Play: "The Battle at Chang Ban" (Shu's Forces) 2. Await for an enemy general on the bridge located between the units of Zhao Yun (to the S) and Zhuge Liang (to the N). This will trigger Zhang Fei's shouting cutscene. 3. Defeat: Xiahou Dun and Xiahou Yuan 4. Supply Team    Starts: gates by Xu Zhu's initial position     Moves: NE