Assassin's Creed - One of them you talk to an informant and he has you assassinate a target. On your way to the target and back to the informant you must not alert any guards or you'll have to start the mission over.

Home > Games > Assassin's Creed> Large Screenshot
One of them you talk to an informant and he has you assassinate a target. On your way to the target and back to the informant you must not alert any guards or you'll have to start the mission over.