Destroy the boss in the South Africa mission.

Finish one optional mission.

Finish a mission without dying even once.

Destroy the boss in the Germany mission.

Destroy 5000 enemy ground units in the single player campaign.

Finish a mission with 100% core integrity.

Destroy 2500 enemy air units in the single player campaign.

Destroy the boss in the Russia mission.

Destroy 2000 objects in the single player campaign.

Start a mission with your ship fully upgraded.

Finish all optional missions.

Destroy the convoy with military resources during the mission in the USA.

Destroy the boss in the Japan mission.

Finish the single player campaign.

Create a 1200 meters long path for enemies during the Canada mission.

Survive wave 5 in Survival Mode.

Destroy 5000 objects in the single player campaign.

Build all types of towers in one mission.

Destroy 17500 enemy ground units in the single player campaign.

Earn your first medal in Survival Mode.

Survive wave 10 in Survival Mode.

Finish a mission with less than 10% core integrity.

Destroy 10000 enemy air units in the single player campaign.

Destroy 5000 enemy units in Survival Mode.

Survive wave 15 in Survival Mode.

Destroy the airbase headquarters during the Hawaii mission before the reinforcements are called in.

Destroy 10000 enemy units in Survival Mode.

Destroy 6000 enemy ground units in the co-op campaign.

Destroy 3000 enemy air units in the co-op campaign.

Earn 3 gold medals in Survival Mode.

Destroy 20000 enemy units in Survival Mode.

Earn 5 silver medals in Survival Mode.

Destroy 2500 objects in the co-op campaign.

Finish all missions with at least a silver trophy.

Earn 7 bronze medals in Survival Mode.

Finish all missions with a gold trophy.

Destroy 20000 enemy ground units in the co-op campaign.

Destroy 6000 objects in the co-op campaign.

Destroy 12000 enemy air units in the co-op campaign.

Finish the co-op campaign.