Unlock the following bonus maps by completing the corresponding missions with a "Gold" rank:
MAP - MISSION Best Defense - Mission 17 Check Mate - Mission 8 Construction Junction - Mission 6 Monkey Troop - Mission 5 The Blue Dragon - Mission 13 The Great Wall Brawl - Mission 11 The Question Of Faith - Mission 19 The Ship Of Fools - Mission 14 Tower Of Power - Mission 16 Under Construction - Mission 3
