It's a nice and solid bullet hell, and it's got some good style. Each boss is quite unique, well animated, and comes with its own clever gimmick. However, it felt quite grindy fighting the same bosses repeatedly to get enough money for the very linear and very powerful upgrades. I'm very skeptical about the upgrade system. With enough upgrades you can practically stand in the same place and easily shred through several bosses. The upgrades actually make the game LESS interesting, which is not what one would want, I would think. The sound assets aren't very impressive, especially the wimpy clinking noise your bullets make when they hit the bosses. The music, though is quite fun and fitting. All in all, I can say it's a very OK game. Nothing wrong with it, but not amazing.