Following are bugs and observations while playing Fortress Dwarven Stronghold (4P): Faction is Erebor for all
Bug 1#: Ered Luin Traders unable to be recruited even after purchasing Arkenstone
Screen shots below
Bug 2: Structures on the map have missing descriptions (see screen shots)
Observation 1: No voice announcement after researching the arkenstone
Observation 2: Kili is able to perform his "Hidden Blade" ability on structures (not sure if that's by design or not).