Pretty colors, great graphics, however, both these things are the game's downfall.
Once you start upgrading your ship and surviving longer than a minute or two your screen becomes chalk full of pretty effects that cover up bullets and warp your screen so you have no idea what is going on because you can't see anything. The more upgrades you get, the more visuals erode your vision.
Random stuff will happen, such as your bullets moving too slow to actually hit bosses, your screen will go "negative" but everything is nearly the same color which prevents you from seeing further, or giant laser beams will shoot across the screen without warning of where it's going to hit. So when you think you have a good streak going, prepare to be dissapointed from randomness stopping you.
Also there's these nifty little forcefield pods that prevents your bullets from going through the field to destroy the pod. Sometimes these will clutter up your screen moving extremely slowly, or stand still during boss fights. The only way to destroy them is to use a spinning sphere around your ship to destroy them. So you get really close without touching them, stand there for 2 seconds, to wait for the sphere to come around to destroy them. In the middle of the boss fight this is very impractical. During some of those random screen effects, you're unable to see the forcefields at all. In addition, there are "hard forcefield" enemies that kill you on impact as well. These as well you can't see when you're in some of those screen effects.
Visuals 9/10, so pretty, but obscuring.
Gameplay 5/10, visuals too obscuring.
Music 7/10, menus have extremely loud music, ingame has repeating decent music.
Sounds 10/10, very well done, plenty of non-grainy sounds.