Hmm...
Well best buddy you certainly made it more difficult, and I've probably become addicted I just don't know yet lol! But...
It definitely could use multiple levels, maybe a bit of storyline. I like how now it's your own health bar ,but I was hoping to see different types of cool alien things to fight, not a bunch of ships. Also the ships explosions kind of happened in area where the ship wasn't. Like the ship would fly in, you shoot it, and the explosion is above it lol. Also it'd be nice if you had some power ups so that you could replenish your shield, maybe you could have an ammo tracker so you'd have to get an ammo powerup for your gun, and gun upgrades. All that would be cool. Maybe even some shield upgrades and shit. Extra lives and such. Just a few suggestions. Ttyl Ry Guy.