Tedious, boring and irritating ...

I don't know why I watched this but I made it to the end.

The guy was inanely chattering all though the movie, and playing endless scenes with "The Smiths" music.

I think it is supposed to terrify us how easy it for some expert hitman to go anywhere and kill anyone. And if he does meet resistance, he gets up and walks away and right back to his job with a few Advils.

I don't know much about guns, but most Miltiary snipers with military weapons use rifles and bullets that are more like cannons from what I have seen online. The bullet is thicker than a man's finger, and as long as a man's hand. If that women had stepped into the line of fire in the first scenes it, most likely, would have blown her up, gone right through her and hit the target.

Problem solved. No need to clean up anything.

Odd that he let the billionaire go on his word when he was saying all through the movie - "trust no one".