While exploring the game world in Dying Light 2, you may come across mysterious Black Ducks. There are 5 such ducks in total. When collected they can be used to access a secret room in the VNC Tower.
Hangar Combat Challenge
One you have all 5 Black Ducks go to VNC Tower, call the elevator and use it to get to the basement. Swim through the water and continue through the door on the right to get to the second elevator.
Take this elevator down to level 0. Doing so will take you to a secret room.
Place the black ducks on each of the five tables. This activates the electrical stations next to each table. Extend and connect the electric cables so that they form a pentagram.
When you do this correctly, a gun will appear in the middle of the room. Interact with it to start the challenge.
