Everything works very smoothly. The gameplay is very satisfying. None of the zombies got stuck and navigated fine. Maps were nicely laid out. The clown merchant was a nice touch.
It's a strong entry.
Some considerations:
- You have to clear the area before proceeding, which is good but perhaps consider a barrier like a door that opens rather than the player just stopping mid-air.
- Ditch the footstep sound effect as it gets too repetitive. I liked the voiced sound effects. Perhaps you could randomly add some more of those instead.
- I get making the area dark, but consider providing a map so you can navigate better.
- To increase tension, remove the head shot kills and provide less ammo. Also, make reloading take longer. It feels more like an action game rather than a horror. But that conflicts with the low light aesthetic more common in tense horrors. A shotgun or axe would have been better than a machine gun for tension, for example. If you want a more action game, then it would be better to improve visibility.