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User blog comment:Tegarmaji/Notable Optional Objectives in ACB & ACR/@comment-1818887-20120325124028/@comment-1888015-20120325235433
You could always do a little jump when you see an Agile or Papal Guard behind you trying to slash your back, and you'll avoid it.
It might be a little tedious, but at least you won't lose any health and can still sprint in a straight line to get out of the Vaticano district.