Silly and fun...
...but as others pointed out it has some serious playability issues. It seems impossible to kill most of the large enemies before they hit you, and you are too large to avoid them.
By the time I got to the penguin thing I couldn't even kill them anymore, they just floated through me no matter how hard I spammed the space key, and spam I did as this nifty medal shows.
Very frustrating. I suggest making the large enemies weaker or the hadukens stronger (or both?).