Hamwan

How to get Zhou Tai's level 10 weapon: Dusk. Attack Power: +55

You must first be playing in hard mode, and you need Zhou Tai's level 9 weapon. Play the Nanman Campaign, Wu side.

This weapon is extremely difficult to earn, since Nanman is a tough stage. Equip a saddle and ride straight down the right path.

Kill Wu Tugu. Enter the Nanman base, and Meng Huo should appear there. Shortly after you'll get the weapon acquired message.

Now slaughter Meng Huo before Lu Xun dies to finish the stage, and you've got your weapon.

If it doesn't work, try it on Wu's Musuo mode.

Enjoy.