Ace Combat: Assault Horizon
51 Achievements
74-90h
PS3
Eagle Eye
Successfully focused on 3 targets.
60.7%
How to unlock the Eagle Eye achievement in Ace Combat: Assault Horizon - Definitive Guide
NekoMancery
TrueAchievements
TrueAchievements
What they mean by a target in this is those moments where the "Y" button prompts you to look at something. So, once you press "Y" when prompted 3 times, this achievement should unlock.
KingUbu
During various missions 
will appear on the screen, press it to focus on a target/point of interest. Doing this 3 times will make the trophy pop.
Thanks to HellSpawn137 for the heads up on that one.