Hi REVVAN.
Thank you for your comprehensive post.
Regarding the flashlight. The game has a jump scare theme and low light will give you those surprises. The dimming of the light adds to game play, forcing the player to find batteries to keep the light on. The player has to manage this resource, only recharging when needed as there is not an infinite number of batteries in the game, but the light will never go out completely. This brings us to the next point: Ammo
Let's say you starting to run out of charge on the flashlight and you remember leaving a battery on the second floor but now you have to return to that floor to recharge. New zombies would have spawned in that location and the longer you stay away from a location the more zombies there will be. You could imagine how many zombies will be on the roof if the player spent an hour getting to the top. So, we went with give enough ammo so that the player can complete the game. But I suppose that is where easy, medium, hard settings should come in which we don't have currently.
Back to the flashlight. We will meet you halfway and place a slider on the settings menu to increase the light distance per the player requirement.
Crouching, Zombies standing still and the one gray door are all bugs which we will sort asap.
And the last issue you did not mention is getting stuck on the stairs. That is not supposed to happen.
Thanks again for your effort. We will keep you updated on our progress.