Tom Clancy's H.A.W.X. 2

Mastering a plane involves obtaining XP while using a particular plane, in order to upgrade it a certain amount of levels (usually 5 or 6), to a maximum XP target. As soon as the maximum XP target is reached, the plane is 'fully mastered'. To check your progress on any plane, from the main menu select 'Pilot Records' and then 'Plane Mastery'. You can master a plane using XP earned either online or during campaign, however there is a trick to farming XP to make mastering planes a very quick and easy affair.

Firstly, complete the campaign, because you will need Mission 19, 'Stand-Off', to be available via Mission Select. Pick Recruit as the difficulty and then pick Custom settings in order to pick the plane and load-out. I personally started with planes that had a few missiles for the air targets, but my priority was bombs for the ground targets, preferably cluster bombs, unguided bombs and precision missiles, but whichever you find the easiest to use is best. MAKE SURE YOU HAVE NOTED HOW MUCH XP IT TAKES TO MASTER YOUR CHOSEN PLANE - it varies between 3000-6000 XP, so just make a note of the target you will need to hit.

Start the mission, fight off the first wave of fighters, then the next few waves of fighters, then tanks, then choppers, then tanks, then a few more planes, and eventually there will be a cut scene where you are instructed to destroy some bridges. THIS IS THE ALL IMPORTANT CHECKPOINT.

This is where the farming begins - there are unlimited waves of tanks from now on, some in groups of between 3 and 7, that give you between 50 and 200 XP each when you destroy the whole lot. DO NOT DESTROY THE BRIDGES as this will complete the mission - instead, keep bombing the tanks. If you run out of ammo, kill yourself, and the checkpoint will load. If you have not reached the required XP, let the time run out, the checkpoint will load. Keep doing this until you have enough XP (you can check by pressing and looking at your score).

For the 1st plane and the 15th plane you master, the trophy will pop immediately as you earn the required XP.