Multiple Rocket Artillery is good for long term war because the cost to research and invest the building. (not applicable for premium account :D). The coastal cities vulnerable to warships attack when opponent already research corvette and have level 2 harbor.
This game already awesome with Naval Patrol Aircraft, Cruiser and ASW chopper that can give heavy damage to warships. I would like to suggest new research tree named Coastal Defence Missile System. At least warship think twice before start attack coastal city. Thanks.
Hi. How can i sync the achievement in Steam and the browser? I had try a few way to unlock the achievement in Steam such as build 25 secret lab but failed to unlock at Steam