Ghost Blade HD (JP)
38 Achievements
PS4
Air Battle
Destroy over 9 big sized ships during stage 3.
68.1%
How to unlock the Air Battle achievement in Ghost Blade HD - Definitive Guide
ThanatosNinja2, DPatriot
As with all stages, there are small and big ships. It looks like the trophy refers to a specific type of big-sized ship, which I couldn’t pinpoint. However, providing you keep using Focus (
) on all the larger ships you see, you will very easily get the trophy, which pops after defeating the ninth required ship.
If you need visual reference, check the video under 1CC 
.