I have absoletly no idea how to feel about this trailer. On one hand i'm really worried that like what splinter cell the new hitman will just be a generic third person shooter. On the other hand....sexy fetish nun...murder....yeah I have no clue.

Interesting.

Is it a mask? A robot? lol

Inset image is before she's headbutted in the face. Someone should get on their detective hats and see if she's punched or hit in the face, pre-headbutt. That'd explain the first 'crack', or show that it's a scar from before the fight started.

I went through the video again. The first time she gets hit is the headbutt, and it's there pre-headbutt like you said PK. So it's likely a scar.

Damn. I really wanted robotic ninja assassin Nuns.

Strangest looking scar, ever. Seems really dark for a scar, but I guess it could be deep and have shadows inside of it.

The thing that made me think of shattering or cracking, was where the two lines intersect. Looks like a small chunk is missing.

I really hope it doesn't turn out to be a generic third person shooter.