I finally had to give up on the Oil War SU25Tcampaign. I have played the first 3 or 4 missions over and over all summer.
One step forward and two steps back. Get shot down and try to just re-fly the mission? Nope.. Go back one first.. Life happens and you have to quit a mission? Go back one.
Forget to change to your favorite load out after hitting fly? Forget it. You hit End for anything.. go back another one.. This would work out a lot better if you could quick save at any point in the mission and continue after you got things sorted out... As it is now. I just don't have any more time or patience for that.
For the A10 Missions..
What I that found works for me is to attack from the rear. I stay as far to the right and as I can, as close to the mountains as possible. Work the air defenses on that right flank first, so you have a clear path to use when going back if you need to rearm. Hug that right flank, stay low, below the LOS of the long range SAMS over the far mountains on the left.
Once you get behind the red defenses you will be in a large flat valley you can use to stage your hit and run attacks from behind.
I just use a big counter clockwise circle attack, always clearing back to the left and then out to the valley to set up another run..