Shoot Down 10 Enemies with Machine Guns
Call of Duty: Advanced Warfare FLYING ACE – Achievement / Trophy Guide
The start of this mission will let you fly a jet. During this section you will have to take out 10 enemy jets with your machine guns. The game will auto-aim pretty generously for you which makes this a lot easier.
You can ignore ground targets since they don’t count for this achievement/trophy. Hold down LT/L2 and keep the red targets centered and you shouldn’t have much trouble getting this one.
If you crash you will have to restart the mission.