Quite obviously, you'll get this achievement on your campaign playthrough at any difficulty.
This is a "stealth" mission. You'll need to keep your altitude under 1500 ft. for this mission as you fly through the canyon to the transports, while engaging multiple ground targets along the way. I recommend the F-15E with its speed and multiple target air-to-ground special weapon. When you reach a group of targets try to cut your airspeed as much as possible so that you can engage all targets in one flyover. If you have to make multiple passes the targets will alert the transport to your presence and the mission will be a failure.
When you reach the transport trucks you can finally climb above 1500 and come down on them, but you need to try and eliminate them FIRST otherwise they will drive below ground into cover. They can easily be spotted as the only moving targets on the ground.
Once the transports have been eliminated the enemy will scramble fighters to intercept you and it becomes an aerial battle. Use whatever air-to-ground weapons you have left to eliminate the ground radar stations as this will make the dog fight much easier. As you begin eliminating the radar sites, you'll received some backup from some of the other Garuda Team members, and then it's simply a matter of eliminating the remaining enemy fighters.