Super simple gameplay, but it was addictive in that way that those simpler games can be sometimes. I liked the perspective that you were working with, there were a lot of nice little touches added to really sell it, like the bullets speed and size changing, the particles when things exploded getting bigger depending on how close they are.
The mouse cursor was nigh on invisible to me, lol, I was using the bullets as tracers really to tell where I was shooting. And it definitely needed to be full screen, I clicked off the window a bunch of times while playing. The graphics were retro and sold that sort of 80's neon vibe well. I only wish the targets had been something other than actual targets, it would've fitted in better.
I played till I got to 100, wondering if there would be some change to the gameplay, but other than things maaaybe speeding up a bit, I didn't notice much.
It's a very simple premise done well, but it needed to have a little more danger, more variety and a goal of some sort to really make it sing. Good job =)