Hrmm, I wasn't able to play this? I think normally with first person mouse controls, games tend to lock the mouse to the middle of the screen, so you don't leave the window. I kept leaving the window with my mouse, and so wasn't able to move far enough to actually aim at anything - I couldn't even pick up the first bit of trash no matter how many times I tried.
Is there a trick to it I'm missing?
(-Joe)