This Assassins Creed: Brotherhood walkthrough is divided into 22 total pages.
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Sequence 2: part 5
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Get on the horse right in front of you and follow Machiavelli.
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Make sure you don't knock over any guards and stay close to Machiavelli.
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Wait untill the thieve has stolen your money, then start sprinting behind him.
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Get in the tackle position (key binding is different from console to console) and run against him.
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To start the next mission go talk to Machiavelli once again.
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Follow him once again on your horse, still minding the guards and the distance.
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Once you've reached the messenger, dismount your horse and kill the guards.
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Sprint behind the guard and try to tackle him.
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If he climbs on the walls, simply climb behind him and keep following him.
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You need to tackle him within the minute for 100% synchronization.
More Assassins Creed: Brotherhood Walkthroughs
This Assassins Creed: Brotherhood walkthrough is divided into 22 total pages.