Same issue here. Replayed it 10 times now! Every time all 6 migs are down in short order no allied casualties, both dodge flights report hitting their target but my results stay at 0, stay on station for an hour, everyone either goes home runs out of fuel or gets hit by a Sam.....just done a repair see if that helps at all. Valid serial and install.
EDIT: repair conducted, replayed mission 3. This is exactly how it played out:
Taxied out behind the last group of f16
Pushed at 07
Destroyed 2 migs at wp9
Sprinted to wp10 and destroyed 2 migs by time 18
Back up to wp9 and down to wp10, 2 more migs destroyed
Dodge 1 and 2 both claim to hit their targets.
Stay on station at wp10-11 for 45 mins (time compression)
Low fuel rtb
Land park and exit
Results 50 6 kills. Campaign doesn't progress.
I parked the campaign soon after its release waiting for a patch for fixes and I still can't get past mission 3! Campaigned files are dated as 27/2/16 DCS version 2.0.1.50747