Well, I dont want to suck up to you, to say. But I really enjoyed the mini-game. Though there are aspects I did not like, for example, the zombies do follow your through walls. It kind a, makes it a bit annoying to play. So you can have a horde storming under you, because they just straight up follow your character.
But still had some fun!
The health, with the drinking soda, kind a reminded me of old Half-Life times. Maybe because you could brake the vending machine and the cans would fly out!
The guns if I am correct, pistol, a revovler, smg and a shotgun. But once they fall behind shelf, is it even possible to pick it up from there?
Sad that you cant fix the planks on door, or maybe I do not know how. But it was there in the Zombie mode of Call of Duty. So maybe possible add?
Going out side the building is also not possible, which kind a sucks, but I get it. Good luck!