Beat sub-mission 4 in area 2 to unlock the F-16C for use in scenario mode.
To unlock the F-15C Eagle for use in the scenario mode, beat sub-mission 5 in area 4 and you'll be able to play it from then on. Make sure not to miss this one, as the F-15C is drastically more powerful than the F-15J.
To unlock the F/A-18 Hornet for use in the scenario mode, beat sub-mission 7 in area 2 and it will be added to your stock of playable fighters.
Beat Sub-mission 10 in Area 4 to unlock the Mig-29 for use in scenario mode.
To unlock Hell Mode, beat Scenario Mode on Expert.
Beat Sub-mission 7 in Area 7. Doing this mission will make the mission that unlocks the F-22A unavailable.
Beat tactical mission 1 in area 4
Beat sub-mission 4 in area 5
Beat tactical mission 2 in area 5
Beat Sub-mission 6 in Area 5
Beat tactical mission 1 in area 6
Complete certain in-game tasks to get each achievement.
When fighting enemy fighters, never give them a chance to fire at you. Go into full speed. Once you have a lock, fire off a missile, and switch targets to see if any other fighters are in range. If not, get out of dodge and go down to about 500ft. Slow down to about 45% and stall until you have the advantage of getting behind another aircraft. Then do the same thing again.
