the secret is to increase the quantity and quality of your defensive units over time as allowed by the amount of gold and experience points that you have amassed.
i posted that i didn't get credit for my score before but when i just logged back in all scores were accoutned for, got badges and credit towards card. sweet!
hated this game the first time i tried it and quit because of the crappy controls. I came back just to get the card and plowed through it. I must say I didn't experience any of the gliches i've seen described. When the game runs without gliches it is pretty easy. sort of like a watered down war craft...
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 "IndestructoTank! AE"){kind=icon}
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