I think the feature that would really make this (for me) would be some sort of voice synthesizer!
I dunno, sounds like, you know, work. I've managed to avoid that so far on this game.
"naijafucker". :D :D :D
It is important to pander to your audience, I find.
I came across a ship that was too thin, and placed as such that I couldn't hit him. I could shoot on both sides of him, but not hit him.
Thought I'd fixed that. Sorry.
Two hints:
1. You need to buy a gun that shoots at 90 degrees to your first gun as soon as possible, otherwise you'll find you have trouble beating those ships in later waves that produce huge streams of bullets.
2. Since your bullets emerge from the centre of your ship, allowing enemy shots to hit you will change the position you shoot from, allowing you to get those harder to reach aliens. Or you can always trigger your special attack by pressing 'Q'.