Really striking visuals!
I agree with everyone that there needs to be more to do, though i think the more important critique is in the gameplay. I ran into one of those bone spikes innitially because i mistook it for a background element, and i got a fully upgraded machine gun, only to get a laser powerup that instantly reset me to 1 projectile, the next stage a machine gun powerup dropped ontop of me and it rewrote my laser power up with a basic 1 shot machinegun, which was frustrating. only other thing is that an auto fire or holding down the button would have been nice for the arthritic in the audience.
This has a lot of style! i would love to see more! c: