I converted this module for use in my Hackmaster campaign and have to say that it worked beautifully. The interesting backstories and small touches really make what looks like a standard dungeon crawl come to life. I had to tone down the number of enemies and treasure but that's purely a mechanical issue of conversion, I'm sure it would be fine for the intended systems. This is an adventure that can easily be the setting for an entire campaign.
A fair number of empty caverns and obvious unresolved cliffhanger stop it from being a full 5 stars but I would highly recommend this module.