To locate the BRM Wallbuy, you must reach the Undercroft which is the lowest region of the Der Eisendrache map in Black Ops 3 Zombies. You can only do this after you have turned on the Power.

To turn on the power, you need to accumulate sufficient points by slaying zombies in the initial area and head outside using the door on your right-hand side. This door will cost you about 750 points.

Call of Duty: Black Ops III is back and with it comes the zombie mayhem fans of the series know and love. There are plenty of secrets for players to find strewn about the maps that’ll help you ...