A Change of Plans: Nothing works entirely as it's supposed to. Talk to Mario just outside his home and follow him indoors. He'll part ways soon, leaving you to read a letter that you've got (just press the button indicated by the on-screen pop-up). After reading the letter, you can find Mario in his back room. Talk to him again for another cut scene.
Mario then sends you to collect four codex pages scattered about the villa. To find them easily, climb to the top of Mario's estate and move to the view point to synchronize. All four codex pages will appear on your map, making the collection very easy. Just go to the four locations on your map and you'll find the codex boxes in plain view on the lowest ground level. When all four are collected, the mission ends. For more info, watch the whole gameplay.
This is an Assassin's Creed II walkthrough for Mission 22: A Change of Plans.
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 22: Change of Plans.
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.