How does your submission match the theme?
Health is the key resource that everything depends on. Firing your gun depletes it, getting hurt depletes it, and it depletes itself slowly over time. Food serves the function of restoring it.

In addition, firing your gun both damages enemies and alerts nearby zombies to your location.

Third-party resources
3rd Party
Engine: Unity3D
Sound Effects: "Chaingun, pistol, rifle, shotgun shots" by Michel at http://cubeengine.com/forum.php4?action=display_thread&thread_id=2164 under CC BY 3.0

All other assets were created in-house during the competition.

Contributors
Developed exclusively by Bonnicus