Thanks for this feedback. Yeah, I know spelling should be better even after using Grammarly... :S Anyhoo, I believe all your gameplay issues were in the module, but maybe I didn't make it as clear as it should have been by using the random tables to handle that. I was going off a MUD-style explanation, trusting the GM to use the description to lead players to understand that something was missing in the room, but again, I see your point.
Stat blocks are the NPC cards. As for the chase mechanic, it's the travel roll mechanic. I thought it was clear; I'll review it too. Thanks.
The Arkhams are in the mansion and are found by using the travel mechanic.
Harsh is fine. Its helpful to know how I can improve, and I appreciate you taking the time to review my module. So thank you. :D