Ever wondered from where to get the keys to open the small faction-themed loot boxes that can be found in The Division 2’s Open World and even during missions?
While defeating faction related bosses is one way to get them, most of the time it’s easier and faster to enter the Underground and look out for key boxes on the walls. It doesn’t matter which entrances you use as all seem to have at least 1-2 of these boxes inside.
Bounties will also reward you with a guaranteed key, depending to which faction the High-Value Targets belong to.
If you don’t want to explore the Underground and just want to farm them more efficiently, check out the video below which features several map routes to obtain these keys.