The principle of the game is somewhat different than in the first part. Since you had to obey his master, gather information about the target and destroy it in an assassination attempt.
In this part of Ezio must watch as his father and brother to be hanged (a new figure, not as Altair in the first part). For revenge, he becomes the assassin, because he quickly noticed that his father was assassin, and takes his clothing and equipment. Now he wants to avenge his family by killing it anyone who had anything to do with this case.
The 2nd part of the AC series has many improvements over the 1st part. For example, there more weapons, more vehicles (coaches and aircraft) and new battle modes (where you can disarm an opponent, for example).
In this part there are 2 "Hidden Blade", so you can 2 guards od. Goals at once kill what is often a great advantage.
In addition, you can now buy equipment (in the form of armor and weapons), clothing and medicine. A visit to the blacksmith is often necessary because the armor may be damaged ...
"Crazy" and beggars who were in the first part and were pretty vervig, there is no longer here. They were replaced by street musicians, but also to run after a behind. This but you can scare by throwing a bit of money (money is the 2nd part of the way, also new).
What is unfortunately still the silly sayings of the mob are walking around climbing on building facades. At least there are several awards and it is not always the same.
Thanks to the improved Animus 2.0 it is now possible to stay longer in the Animus. I think you wake up in the game only 2-3 times and must leave the Animus.
I can not say exactly how long it took me to play through it, but when I think at the beginning, then that's quite a while ago, so the game is not too short.
Also in this part at the end again some questions unanswered, and you would like to buy the next episode to find out how it goes ... and that I'll do in the next few days!
I was very fascinated by this part, I'm already used by the 1st part, the graphics and the realistic look of the cities, but that blows me away still :-)
I recommend this game like to continue, even if one of the first part of Assassin's Creed did not like. Here you have a lot more variety and the 2nd part is much more fun than the 1st!