what if a dev made a port of thing thing 2 for the psp?
you're probaly asking what about the mouse targeting?
I'd say ever played lua circles the dev could use the cross hair movement but with the joystick nub.
I just had an idea! the triangle square x and circle button could be for moving the character and r to shoot L to punch and the directional buttons or the joystick to target using the crosshair.