Clear every version of every mission and complete mission 30 (Operation X)

Kill 200 enemies to get this medal.

when an enemy gets a lock on you, speed up and pull a high maneuver immediately to break the lock before he throws missiles at you...chances when he succeeded in firing a missile, pull and roll sideways,or even drop altitude (roll upside down and pull up for quick altitude drop). Never fly on a straight path or maintain altitude. Also,look into the radar for positions and distance. The rate of evasion will be based on on your position and range of the opponent(avoid close range to evade machine gun fire),the missile (missiles flying at 3' and 9'o clock positions are easy to dodge) and type of special weapons used by the opponent (QAAM's are too dangerous at close range)... i hope this will help.

if an enimy is locked on to you warning will be written on the hud.when they fire a missle encrease your speed and fly left or right.then you roll towards the direction you were flying. Thats all. your a missle dodger.

If you are trying to destroy aircrafts that don't stop moving and turning in all directions, and really want them down, here's what I do;

1- stabilise/put the plane back to horizontal
2- increase thrust
3- when you think you are far enough, pull the analogue stick so that your plane makes half a looping. Not a complete one, remember
4- your enemy should have followed you, so he will be heading in your direction. If he is far enough, stabilize your plane
5- increase or decrease altitude to be more or less at the same height as him, but do not incline the plane too much. One thing I do is turn it upside-down, so it falls automatically. correct also your your heading, in case it isn't right
6- arm suitable weapon, and wait for distance between you and the enemy to be quite short. If too close, he the missile wont hit him, if too far, he will have time to dodge
7- fire

Remember, re-increase thrust after the looping!
Usually, several planes follow you, so you can shoot them all down, and if you see that when you are aiming the enemy, and they are aiming at you too, don't wait for distance to shorten, fire when locked, and steer out of danger!

It always work for me, on any difficulty, if you don't manage to do it, there might be an error while you tried to do it, or maybe there's a different AI in the game, or simply, maybe I missed a step...

Operation X is the last mission in Ace Combat X. It is unlocked when you beat every mission and mission branch in the game.

In the mission Alect Squadron,when the air battle has started,destroy enemy fighters until you hear a Leasath pilot saying the following phrase:"Dammit,we're losing! Don't superior numbers count anything!?".This is actually one of Swordsman's dialog lines from AC05 The Unsung War.