How do you beat cesare to the apple of Eden in assassins creed brotherhood?

If your trying to get full synchronization, crossing the bridge is suicide. It's pretty hard even if you are not crossing the bridge. There are archers and snipers on rooftops and agiles and papal guards on the steets. My advice is head towards the water as soon as you can. Take the rooftops, because there are less archers and snipers on rooftops than agiles on the ground. DON'T jump from a high roof to the water. You might have a whole street to jump across.(Doesn't matter if you have a parachute). Stay on the ground when you jump. Don't bother using a canoe, it takes too much time to find one and you can still get shot. Dive.