5. Shoot Through Windows From A Ledge
Chances are it took a few turns at the military hangar or Paris mission before you realised just how much vertical access you have to the entire map from the get-go. Both missions have drainage pipes you can clamber up to get onto the above balconies, opening up the perfect opportunity to pull targets or enemies directly through windows for an easy kill - providing nobody below is going to look up, of course. In addition though, if you sidle up to a given window and don't hit X/A, but instead ready your weapon, 47 will hold it at an angle that lets you fire into the room in question. This is a great way to kill various characters like Jasper Knight as they play chess in the second mission, or any other NPCs, without revealing your full position.