I thought the game was good as a whole. Once I got to the last three dungeons, however, I was tempted to quit since all the puzzles essentially devolved into "Go traverse this treacherous one-tile wide paths where you have to start over if you stray off it!" It would have been half-bad if the character didn't slide when you let go of the key. The fire dungeon is where this really became apparent.
Blatant rip-off of Death vs. Monstars. Right down to the green blobs and mouth enemies. I was also able to fully upgrade everything after level 6. Considering each level is practically the same thing, it's not even worth finishing.
If you're going to make a rhythm game with only three rows, at least making more exciting than endless runs of alternating 8ths. Classical pieces are usually the hardest selections in rhythm games because of their complexity. At least demonstrate some modicum of that in your charts.
Hit detection is absolutely horrid. I also don't get how you're still damaged by the exploding red things when they're nowhere near you. If you were flying through the explosion I could understand, but most of the time you're not. Needless to say, it makes the game quite annoying when you get the gun strong enough to destroy asteroids once they enter the playfield.
You lose too many bombs when they get tossed into the arena. At least wait until all the explosions finish before the next one is tossed in. Also, the help says it's a 5 second penalty but it says 10 in the game. Worthy attempt, but not as good as Every Extend.