Only buy artillery, nothing else. Then spend your money on repairs and health when needed. I was able to beat it in 10 days. Thanks to tigerbo2006 for the guide.
Congratulations! You just won the Precision Demolition Badge and 30 points!
Wow, that was time consuming. And frustrating, aggravating, enraging, and made me want to kill myself just a little bit.
Glitches had me stuck on the right, left, and bottom, all on different levels. Ammo costs too much, and the combo timer is too short. It's a good start, but it definitely needs some work.
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