Sounds similar to the boss The End in MGS3-- you should incorporate some sort of camouflage aspect to the game.
Whenever I die in this game, I feel like it's my fault, and not the games fault-- which is a pretty good indicator that this game is awesome.
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The most popular dual stick shooter out there right now is probably "geometry wars"... there was also the game "smash tv" which might have been the first to use it... I love dual stick shooters but to play them on a computer you would probably need a controller (which I have luckily)...