I love this mission. It's fantastic. The best mission yet released for the Dark Mod, in my opinion. My only complaint is the AI being able to see through fog, but that's it. It's massive, challenging, there's a lot to do, the story is engaging, and there is just so much loot to steal. By happenstance, I discovered a strange AI pathing bug. I have no idea if this is the pathing in the mission, or The Dark Mod. I was at the top of the spiral staircase, and I was moving the barrel aside to make some room for some attempted lockpicking on the door. I had moved it too far however, and it tumbled down the stairs, creating a good deal of noise. I could hear the gentleman on the floor below looking for the source of the noise. I stayed where I was until I heard him give up. "Hm. Most vexing." When I went back downstairs, I found the barrel had landed in standing position in the doorway to the stone corridor. In the corridor, I saw the gentleman who heard the barrel, walking determinedly straight into the wall, quite a few feet away from the barrel. He was not currently alert, either. He was saying his idle lines such as "It's too quiet. I should summon the minstrel." Incidentally, this made him remarkably easy to pickpocket. The barrel in the doorway is directly related. When I move the barrel, he turns and enters the staircase, then goes back into the corridor and resumes his normal patrol. If you want to see for yourself, I've uploaded a savefile. I've loaded the save several times, and he continues walking into the wall, so it's consistant. At least on my end. Again, I dunno if this is an issue with the map, or The Dark Mod itself.