I finished the single player campaign and I felt it was wonderful... and too short. I did have an issue like your first, but didn't have any like your second. Something similar though, when we were capturing that guy in the mall he just sat out in the open and got shot at but didn't take any damage. Everytime I'd get close to him they'd start picking me off but he could just sit there all day till it was time to go. I really loved the flight , tank, and parachute missions. Those were just awesome and the audio was incredible during those missions as well.