It's really annoying when you get a zombie that's too close to shoot. I've actually died because a few of the fast ones got too close to kill with my minigun, and because I was too slow to escape they just killed me. Would be nice if you were able to shoot the ones RIGHT next to you.
I know Acydyk outlined a good way to beat the final boss when it does its missile thing, but I think the hardest one of his attacks is the pulse-like one. When it starts, count 5 spikes (the things shooting the pulses) over from the right, and there's a space just big enough for your ship in between that one and the sixth. It helps to get as close to the boss as you can without taking damage, and when you're good just wait it out =D.
Great game. I love the way it looks and there's great enemy variety. It would be good to have a more reliable hit area on what's coming at you. I don't have much else to say that hasn't been said, but when I waste half my energy just looking around for where it actually hits the guy it can get kind of annoying.
seems a lot like the other bubble tanks (which for me is a good thing), but keeps the same problem they all had: If a bubble goes out it's lost forever! I don't want to kill a big tank-thing only to have half the bubbles it gives me fly out into oblivion! other than that major complaint there isn't much else to say that hasn't already been said by someone else.