Enemy name: Eldar Gypsy should be Elder (same error as elder eles)
Sign bubble: T
He Long Shot - Bowyer & Fletcher - ugly typo
"You awake with a start" - awake is a state, should use verb (awaken). This is first bubble msg of Act Four.
Pascal Rousseau doesn't confront you when you break into his house. He does have dialogue, so imo it should trigger unless he can't see you (ie, you're under stealth).
Just remembered, it's very easy to leave "In harm's way" hanging, as the dwarves you need to save can easily be killed by the duergar. I would say many new players would fail this, unless they reload the entire dungeon and meta-game it. I couldn't find the last dwarf, searched for... too long... turns out he was dead, corpse-faded.
Oh, and the cutscene that opens Act Four - the cam clips horribly into the watchtower.
Lastly, Highmarch siege post up. You can see in the first-person shots of Carthach and Hasrinaxx just how ugly those hoods look, would be nice to see their faces... same with Terinus, I don't think he should be faceless when you first meet him, btw. Just my opinion, of course.