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.

Accept the mission and start heading for the city's exit to the south. Take the rooftops if you don't want to get bothered by guards, 'cause you're currently very notorious. If you climb onto the parapet wall, you can take a leap of faith into a stack of hay on the ground outside the city. Activate eagle vision and you should be able to spot Checco Orsi nearby.

Run after Checco and expect him to flee. You won't really be able to catch him—he's a quick bugger—but keep your sights focused on him. Checco will lead you through blockades of guards that you'll have to get through. Look for the guards that aren't armed with weapons and tap the jump button to leap through them, avoiding a nasty takedown.

If you do get stopped by the guards, do not try to fight them. Just run. If you get followed by the fast guards that run faster than you, wait until they get within striking distance and tap the jump button. The little leap will stutter the guards long enough to create space that'll let you run.

Eventually, Checco stops to fight you. You'll likely also be surrounded by many guards, but do your best to focus on Checco, the dude without a helmet. Kill him and the mission will end.