Assassin's Creed II

Video walkthrough - http://assassinscreedfans.yolasite.com/vw2.php
Assassin's Creed 2 starts with Desmond and Lucy breaking out of Abstergo and going to a hideout to meet Shaun and Rebecca. The story progresses similarly to the first, but you only get out once, that is for some training to see if the project is working. You can then play the game after the credits. Below is an E3 demo.