Originally posted by: DrPizza
No. Get the missile thing (top notch red thingy) - position them about 2/3 of the way down the screen, slightly to the left. EVERY upgrade: use it to increase damage. You can position the upgrades so that multiple upgrades hit multiple missile things; I had several that increased by 125%. Once you've got a few missile thingies, all that's left is to keep adding the blue thing (top row of choices) - that'll slow them down and give your missiles lots of extra time to blast them. Incredibly easy game with this strategy.