Advance Wars 2: Black Hole Rising
Erase DataLike in the first Advance Wars, you can erase your save data by holding L+Right+Select before turning the game on.
Lab Map LocationsTo gain Neotanks , you have to capture a specific city in a specific map to get the lab map, and then beat a hidden mission. You have to do this in each country.
Orange starFlak Attack: City north of your HQ, within range of your units starting positions.
Secret Level: Test of Time