Unlock the following bonuses by performing the corresponding tasks:
BONUS - HOW TO UNLOCK Ambassador gunship - Complete level 3 of the helicopter flying mission. Diplomat heavy tank - Destroy the targeted buildings for the allied nations. MOAB bomb - Complete all HVT missions for the allied nations. Nuclear Bunker Buster - Complete the final contract mission, "Get Solano Part 2" to unlock it for purchase from Eva for $1 million.