I liked it, especially once you get the rapid fire powerup and can start really hosing down enemies. Like some other commenters I also thought the music worked perfectly. I was kinda confused about what the other powerups did (does the axe actually do anything?), and I would have liked some more sensory feedback, like audio, screenshake, etc, when killing an enemy or getting injured or getting a buff from a powerup. Also, this is minor but I thought at first it would hurt me to touch the debris left behind from a destroyed enemy, maybe because it looked like an obstacle. Fun little game!