I'll admit - this was a challenge to run and play. I played it first and we nearly had a TPK. Bad call man, bad call. We approached the final fight completely wrong and felt the results. Depedning on the players/party, the RP elements can go fast or slow. The final has always dragged on for me. I have NEVER finished this module in 4 hours. 4.5 to 5 hours seems a better guesstimate based on my experience. Lots of opportunity for "out of the box" thinking. I like to reward players with lots of inspiration if they get engaged in the adventure. A challenging adventure, but a fun one.
[4 of 5 Stars!]