Why can’t you position yourself accurately below an object so that you can aim your weapon at someone’s skull without exposing yourself? This is just one of the problems that's been addressed in Raven Shield. despite the hyper-realistic settings, weaponry and scenarios in previous outings, just how good is it if you have to control a man who can only shoot from three positions: standing, lying or squatting. When it comes to tactical shooters it’s a given that they don't come better than the Rainbow Six series.