Well you seem to be forgetting something, the way the game is SUPPOSED to be played is in a sort of faction vs faction system: USEC vs Bear. With the current state of the game there is no way to punish people killing their own faction, until the karma system is in. Even then there will be rouge elements at play who don't really care. So ideally you should be able to team up with that random USEC or Bear player that you come across but sadly that will not happen. As for complaining about solo play being too hard the only thing I can say is get good. If you take your time and not try to COD yourself through the game you will be fine.