GAME RELATED QUESTION Don't just send me a link or tell me to look it up, I want YOUR help

On the Zombies Map Die Maschine, there are several easter eggs

- Coffin Dance Easter Egg
- Jetgun Upgrades
- Main Easter Egg

How do you do each one?

I will give you the crown thing if you provide information for each one

What is wi-fi infrastructure? a metropolitan area network that uses radio signals to transmit and receive data a communications technology aimed at providing high-speed wireless data over metropolitan area networks a means by which portable devices can connect wirelessly to a local area network, using access points that send and receive data via radio waves includes the inner workings of a wi-fi service or utility, including the signal transmitters, towers, or poles and additional equipment required to send out a wi-fi signal