Okay, I played through a couple of bosses and think this is a pretty decent game...overall. The biggest glitch I encountered was when I almost reached another boss, the boss-timer started over again.
Additionally, at 4.1 mb I don't really understand why I fought the same boss twice, encountering no more than 5 or 6 enemy types throughout that time.
I also don't get why I would have such terrible lag, if this game was true to it's pixel-style. Additionally, I thought the controls were very loose and often didn't react properly to each other. And with the lag I was having, I had a hard time noticing upgrades or timing my attacks on the enemies, which felt sort of pointless as they didn't react at all. I remember zoning out thinking about something entirely different for a good minute and didn't suffer any real damage...in fact I was still winning...by which I'm suggesting that perhaps there isn't enough opportunity for the player to really interact...to PLAY the game.
I also think there was something kinda lazy on the graphics end, although I loved the pixel explosions. I didn't like how the enemies died using a motion-tween, however, I think that cheapened the game.
out of 10...
gfx - 6 (poor use of pixel effects)
sfx - N/A (I have no soundcard)
design - 7 (cool upgrades, confusing spaces)
gameplay - 5 (conflicting controls, repetitive gameplay)
overall, I think this is not bad game. I will admit that I think it feels sort of gimmicky...hard to explain. There are some cool features, but overall I think this game suffers from a mixture of classic hangups.