I like the idea. Good job so far, keep going!
One bug (maybe) I have seen is, the world is not refreshed when I'm dead and respawned. As a result, I cannot find any guns after a few deaths.
A few questions about the game:
Are the guns going to be purchasable from gun stores? Are we gonna be able to hide from other shooters in the open doors? I'm guessing there're gonna be more levels?