There's also a bug I assume, of when you die and you spawn in who's who, zombies are already on you when you spawn in, and you die instantly. Like whilst you're going into who's who, you can see the zombies running to your spawn location, and since this is a small map, you get trapped and die.

There is a glitch with who's who, with the blurred vision, and if you die without reviving yourself, and start a new game, you will keep that blurred vision, and you need to restart your game. Just a minor glitch, but seems easily fixable.