How to break the game: 1. Buy 10 cloth and as many diamonds as possible. 2. Upgrade to vanguard. 3. Downgrade to medieval tank. 4. Repeat 2+3 until you're out of diamonds. 5. Sell everything but the 10 cloth. 6. Repeat.
Also once you have enough money to buy a diamond and 10 cloth, you're set for life.
Just upgrade to vanguard then downgrade to tank and sell everything but the cloth. Use the money to buy another diamond and the rest is profit :)
Game is good, plot is awful: both predictable and inscrutable at the same time.
Also not posting the controls is just stupid! I had to start over because I forgot that 's' (and not the up arrow) lifted boxes.
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