The ice storm One hit kills is also very obnoxious, there's that one spot near the dragon wall and you won't notice it until you turn the corner and the soul gem blasts the hell out of you. Instant kill almost every time, hate that so much. The same goes for Malkoran in "The Break of Dawn" Daedric quest, he also has it and he loves to start with it since he's long distance from you. The major problem about that is the door is the only way to avoid it, you can't just close the door because the undead phantoms will open it (since they come at you), you're in a narrow stair case which is all open for the attack with VERY LITTLE room to maneuver. You have to beat the ice storm to the opening of the room from the door in order to avoid getting hit.
Another thing that really frustrates me, I have 2 followers other than Faendal, both Esbern and Delphine, I haven't seen them since the beginning of trying to help the Imperials to win this war and that's been all night IRL. They don't follow me anymore, I don't know where to find them either, the other followers sometimes disappear and then boom, re-appear in their own convenience, not when you're in serious need of their help either. Another lovely bit is when the map markers never show up in missions when you need it or when they tell you to keep going through the same door (both in Fallout series and Elder Scrolls). Go in this door, now leave through this door, now go in this same door, now go back out that door.... over and over and over!