I can't get to the last enemy

[Redjac]

There is a big red question mark in the broadcast building in Sagrada. I don't think there is any way to get in this building. I really don't want to refight this battle, I was at it for hours and my guys are limpin, Plus there is a fortune in weapons lying around. HTF did the enemy get in there?

Any way to make this last enemy disappear? I would even settle for a ~killallfoe console command.