Practice What You Preach: Just make sure you know what you're doing. Return to Leonardo in Florence and he'll use your collected codices to give you some new skills. After the cut scene, look for the marker on your map that points you to a courtyard behind Leonardo's pad. There are three new stealth kills you've learned, and you need to practice each.
To perform the hiding spot kill, hop into the pile of hay and press the assassinate button. The air assassinate move must be executed from a platform directly above the dummy that's on the ground. Just lock onto the dummy and press the assassinate button an Ezio will do the hard work. The assassination from the ledge works by climbing onto the ledge just below the railing of the upper balcony. Press the button and Ezio makes the kill look easy. For more info, watch the whole gameplay.
This is an Assassin's Creed II walkthrough for Mission 23: Practice What You Preach.
Mahalo's Assassins Creed 2 Walkthroughs are more than enough information for you to play the game yourself, and they teach you everything your need to be prepared for when playing yourself. This video walkthrough focuses on Mission 23: Practice What You Preach.
Assassin's Creed 2 by Ubisoft is the action-adventure video game playable on PlayStation 3, Xbox 360, Sony PSP, and Nintendo DS video game consoles, along with Microsoft Windows. It is the direct sequel of Assassin's Creed and revolves around Ezio, and is set in Renaissance Italy. Ezio befriends Leonardo da Vinci, who provides experimental weapons and gadgets, and takes on Florence's most powerful families and ventures throughout the canals of Venice, where he learns to become a master assassin. The Assassin's Creed 2 gameplay is a mixture of action, stealth, and acrobatics.