very cool
i somewhat agree with a few others that say you should have either made it a movie or made it harder... this was a very cool idea... i liked the whole thing other than having to constantly hit space... i never used the arrow keys...
a movie with the same idea would be a must see... but, to keep it a game... i suggest making your weapon something a lot more aimed... no homing... also, make the transmigrations into other forms and levels a goal rather than an eventuality....
make it like you have to get a certain amount of points and choose what aspect of your being to "evolve" and different choices will result in different types of levels and so on...
sorry for trying run your thing for you... but, i see a lot of potential and i'm just trying to give you some ideas... i will very much like to see a movie or the next game...
please... continue