User blog comment:Master Sima Yi/Assassinews 19-03-'14 – Two Assassin's Creeds for 2014?: Unity and Comet/@comment-24760042-20140702114028/@comment-3046679-20140702233741

Personally I took the powder with highest spread, come out and wait for a guard to be highlighted, throw it at him. Repeat ad nauseum while making more via the weapon wheel screen.