Sounds similar to the boss The End in MGS3-- you should incorporate some sort of camouflage aspect to the game.
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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.
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)...