I've played quite a bit now, so here's my first impressions.
When I saw the module has 34 dungeon levels, but characters only end up lvl 4-5 I got a bit apprehensive. One of my pet peeves with user made content is making the map/module too large and not have enough content in it. I've seen it often with Heroes of Might&Magic maps, and occasionally with FRUA modules.
And I must say this partly applies to this module. The content is of high quality, but it should have been condensed into fewer dungeons. "Lawn mowing" the outdoors areas to find the encounters is not very fun, and is not good role playing either, but I feel I'm forced to do it in order not to miss vital things.
It is made worse by all the trees being traversable. It would have been better to make those that look impassable to be impassable, and create some mazes and/or paths instead, and perhaps to use Zones to trigger events, to prevent the "lawn mowing".
Also, too many events have several choices that lead to the excact same result. For example the little band of thieves in area B3. No matter what you do the results are the same; party is surprised. My party smelled an ambush, but no matter what they did they got surprised. Would have been nice if "You are all under arrest!" at least would make them laugh long enough to lose initiative.
What I like about this module is that it's definitely not Monty Haul, not so far at least. Even a suit of Chain Mail is a major treasure. Which reminds me...for some reason Paladins and Rangers can't use Leather Armour, so maybe throw in another Ring Mail at the armoury?
There's lots of NPCs and side quests to keep track of, which is a good thing.
Bottom line so far: good content, but should be concentrated to a smaller area.
Also, nice to see Iron Maiden inspiring a FRUA module. Revelations is one of my absolute favourite Maiden songs.