Koschei Complex is the latest extraction zone available to players in the Call of Duty DMZ mode, but it offers a lot more to players than exploration. Similar to Building 21, you’ll need to find a way to get into the Koschei Complex, and if you’ve already done that, another bunker door stands in your way.
While finding an entrance to the complex can be difficult, the door will at least open without charge. The bunker door, however, will not open on its own and the power does not work otherwise, but I have opened it myself in the DMZ and can provide you with a detailed explanation of how to open it.
Find out how to Open the Bunker Door in the Koschei Complex COD DMZ | Electrician Needed!
It is a separate instance of Building 21 when you enter it, but with more steps. After you have loaded in, you will find plenty of dangerous corridors, and the lights are still on. At the end of the red arrows, you’ll find a room with a massive bunker door, just like the entrance to the building.
There is a button on the right side of the wall to open the door, and it won’t move on its own. In this section of the Koschei Complex, however, there is no power. There is an electrical box on the right, near the button, that says parts are missing when you approach. Luckily, this isn’t a big deal.