I'm bummed, I already beat this and loading the game doesn't give me the last achievement. You'd think that if you controlled all the cities it should pop it.
To add the EnemyMissile clip to the library:
1. Right click the Missile object in the library and choose Copy.
2. Right click the Missile object in the library, choose Rename, and call it EnemyMissile.
3. Right click anywhere in the library and choose Paste.
4. Right click the EnemyMissile object and choose Linkage.
5. Rename the Class and Identifier to EnemyMissile and click OK.
 "Monster Master"){kind=icon}
 "Feudalism II"){kind=icon}
 "Shootorial #5"){kind=icon}
 "Nano War"){kind=icon}