Well, this was different. I like the idea of this so far, with the shooting food people with the motivation of just trying to be alone for a bit. That's relatable among many gamers.
I will say, however, that it definitely needs some tweaking. I found it way too hard trying to get the batteries into the machine. And when you finally get a gun it just eats through ammo in the blink of an eye. Maybe set it so the use key just clicks the battery into the machine so you're not struggling while being swarmed. Also, for a gun game, I felt like I was moving at a snail's pace for most of it, even if enemy speed was kept relative to it. Still, overall, this is looking good and I like what you have going on. Keep up the good work.