This game is great, my biggest gripe with it is that the goal is to survive x amount of time. I'm not sure why you didn't tie it to "destroy x amount of capacitors". I feel like that would've made the game more interesting and action based.
High scores are okay but if you're playing to get to the next level, the optimal strat is to sit there and play ping pong instead of going out to destroy stuff.
I really like a lot of how this game operates, I think it's great that you get a Pacman like powerup that lets you kill enemies on a timer.
I think the menu music is a bit more interesting and maybe better for gameplay than the gameplay music, maybe just personal preference. Most of the sounds are good although there could be some variation on the enemies shooting.