So, this module's got a pretty glaring problem: the final encounter. It is supposed to be a huge three-way fight, but there is no way for the party to really know that this will happen. That makes the final scene very susceptible to analysis paralysis. Couple that with several dozen possible combatants and it can easily become a multi-hour slog rather than the "cinematic" combat the author intended.

Perhaps worst of all, though, is that the big "reward" at the end is essentially 3 does of "slightly worse than potions of greater healing" makes the whole module seem like a waste.