I break bones all the time and it seems to happen incredibly easily. I have broken bones by walking forwards through an empty field, by walking through a doorway, down some stairs etc.
Having just started the game, it feels like being a bandit is forced rather than being a choice. I have never met another player that didn't try to kill me the moment they saw me. So why the hell would I not shoot on sight?
Well I have the same issue, and I can't reinstall battleye. Reinstalling by right clicking Arma 2 gives a "This game is currently unavailable error" & OA gives the MISSING STRING error.