Sadly I can't give this zero stars. The whole scenario seemed designed to be more annoying than dangerous. Small rooms with hard corners to prevent most of the party from effecting the combat. High defenses for little reason. Traps that were no real threat, just consumed time and out of combat healing.
The only thing really challenging in this scenario was the 5 hour real world time limit, which is very tight, and the scenario appears to be deliberately using up. It actively punishes any enjoyment of the game, and leads to a totally unsatisfying ending - randomly stopping a combat and denying any scenario resolution.
I cannot stress enough how bad a design decision this was. If a scenario absolutely needs to be done in 5 hours, write a scenario that plays in under 5 hours. I cannot fathom how anyone could think this was a good idea.