Attack other players 1,000 times.
Lose 1,000 infantry units.
Collect from your headquarters.
Destroy 300 power-ups in combat.
Construct 300 power-ups.
Attack 100 enemies who have attacked you.
Train 500 infantry units.
Attack 300 enemy players.
Win 375 campaign battles.
Build 200 aerial units.
Complete 20 social quests.
Reach level 20.
Collect 300,000 coins.
Set a bounty on 100 enemies.
Build 100 defensive structures.
Accumulate 1,500 energy.
Win a battle using 3 or more power-ups.
Build 100 boosters.
Win a battle without losing any units.
Successfully complete training.
