Tom Clancy's H.A.W.X.
51 Achievements
PS3
Unimpressed
Score a kill with the Cannon while the enemy has Missile Suppression active.
3.1%
How to unlock the Unimpressed achievement in Tom Clancy's H.A.W.X. - Definitive Guide
Luck, Skill or boosting partner again. Boosting partner would be easiest for this because killing someone with a cannon can be difficult, especially with the chance that the plane can change direction at any time.