it's a cool game great job. kinda short but still it is a great idea. I tried the ir mode too it's a really cool use for the ir port. only thing is is that it's a little wierd holding the controller above the psp so I think maybe it would be better if in Ir mode the screen is turned upside down and inverted so that you can turn the psp upside down and play it in a more comfortable position.
I definitely like the idea of a shield. In time this could become a great game. keep up the great work!