In order to complete the Easter egg, you must open the locked room on the rooftop. To do this, you need to interact with all four ritual tables around the map.
One is directly outside of spawn.
One is near the entrance to the church.
One is in the center of the furnace room.
And the last one is directly up the stairs from the furnace room to the rooftop.
After all four rituals have been started/interacted with, the locked door on the roof will be opened; revealing a buyable ending.


Three parts need to be picked up before building the shield. The first part could be located beside the candle-lit table outside of spawn, beside the staircase outside of the spawn area, or directly above that staircase leaning up against the short, wooden wall. The second part will spawn somewhere around the black-gold walls, but not on the catwalk itself. And the third part will always be on the wooden crate inside the power room. After finding all three parts, you can now craft the shield at the crafting table near spawn.


Three parts need to be picked up before building the ragnarok. The first part could be on the table inside of the lab, on the shelf inside of the lab, or on the cabinet inside of the lab. The second part could be on the church pew farthest to the left of the PDW wallbuy, the church pew farthest to the right of the PDW wallbuy, or the church pew closest to the right of the PDW wallbuy. And the third part will always be located on the roof, just opposite to the MG08 wallbuy. After finding all three parts, you can now craft the ragnarok at the crafting table inside the church.


Three parts need to be picked up before building the Gkz Mark 3. The first part will always be on the smaller shelf inside the cave. The second part will always be on the table near the church entrance. And the third part will always be on the shelf closest to pack a punch in the "depot" area. After finding all three parts, you can now craft the Gkz Mark 3 at the crafting table inside of the power station.


The first thing you need to do is turn on power. After power has been turned on, you will be able to interact with three wine bottles around the map. One is on the candle-lit table near spawn, one is on the larger shelf inside the cave, and one is on the fireplace in the furnace room. After interacting with all three wine bottles, you will get a random free perk.


Just next to the SVU-AS wallbuy, there will be a bone lying on the ground. The bone is a soulbox. Kill about twenty zombies near this soulbox and you will be rewarded with a free double points.