How can I perform helicopter air strikes?


Seeking out 8 or more zombies and deploying a troop will trigger a helicopter air strike.


Chain Gun (x2 attack force)
If 8 to 13 zombies were found, a chain gun initiates an attack.


Missile Attack (x3 attack force)
If 14 or more zombies are seeked out first, a missile launch attack is initiated.


Since this is an effective strategy when attacking tougher zombies with high defensive powers, seek out as many zombies as you can before deploying a troop. 




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