Assassin's Creed 2 Walkthrough

Wait, you don't have Sequence 12 or 13 in your game!? Neither did we at first. Ubisoft released the two missing sequences as downloadable content months after the game's release. If you want to play them, you'll have to download them.

This is a pretty straight-forward memory. You've just got to run from one end of the city to the other, making sure Caterina (or that other dude) don't fall victim to the many ambushes you run into along the way.

Expect to be stopped a number of times by ambushes. Do your best to keep track of the two main allies and watch their health meters on the screen. If they get into trouble, help 'em out. You'll find they get into most trouble when you're attacked in tight spaces. When you finally reach the end point, you'll have to fend off one last ambush before running into the citadel for cover and the next mission.

The citadel is infiltrated with myriad guards and you've got to fight them off, while keeping the same allies alive. The first batch of baddies will appear on ground level. Fight them off, then chase Caterina up to the parapet walk and onto the rooftops.

You'll start getting a count of how many enemies are left. If they're engaged in combat with your allies, you can quickly kill off the enemies with hidden blade assassinations from behind. Alternately, just toss 'em off the rooftops. When all enemies are dead, the mission ends.