In Fable 3 for the Xbox 360, you will find the Mourningwood Demon Door near the small village in Mourningwood.
To open this demon door, you’ll need to have maxed out either your ranged or melee skill to level five.
Once you have upgraded one of those skills to level five, bring out a corresponding legendary weapon for that skill in front of the door to open it. Inside you’ll find a Military Costume and a Summon Creatures Potion.
