Hmm...
I liked the graphics and stuff but do squids really hurt METAL that much ?
Anyway, for the complexity of that game and the fact that it's hard like the "Megaman" games on the GB (insider) I'll rate you a 7/10.
Oh by the way, your scoreboard is also hackable (or lets say, the score), so you'll be added to my blog, which can be found on my page on NG.
Keep up the good work (3/5)