There are 5 scenarios in the Sforza campaign:
1. An End and a Beginning
2. O Fortuna
3. The Hand of a Daughter
4. The Ambrosian Republic
5. A New Duke of Milan
Win every scenario of the campaign using the cheat code “i r winner”. Then, to trigger the achievement, win any scenario of any campaign without using cheat codes. The quickest scenario is the 1st scenario of the William Wallace Learning Campaign: Marching and Fighting.