Sure took a while, but I made it! :) The right tactic seems to get as close as you can to the enemy base as fast as possible, and keep firing away all the while building up additional turrets to keep the foes at bay and help you bombard the base. A simple but fun little strategy game, with polished controls and features, though it gets a bit monotone when you're just firing away for maybe ten minutes, with no extra levels, or upgrades, or variation in enemies. Fun for a while, but not so sure about replay value. Maybe if there was a highscore table too? Best time, maybe? Would love to see this evolve into something longer, and with less time required on each level if it does. Nice work so far!
-cd-