Monsters vs. Aliens
46 Achievements
14-17h
PS3
Collateral Damage
Destroy 30 EyeScouts and Helicopters in Ginormica’s levels in Coop.
19.4%
How to unlock the Collateral Damage achievement in Monsters vs. Aliens - Definitive Guide
Use controller 2 to destroy 30 Helicopters in Ginormica's levels. Should get this through one or two plays in coop on her levels.