This command removes the specified amount of doom from the Avatar Project. You can only remove Avatar progress that isn't from the extra Avatar facilities. So if you have two facilities that each have 3 bars of progress, your Avatar progress will not go below 6 until you destroy them.
Amount is a number that specifies the amount of doom you want to remove from the Avatar project.
The command RemoveFortressDoom 2 will remove 2 doom from the Avatar Project.