Currently running it - I think 90% of the complaints in this thread could be solved by using the optional Pulp rules. Just double your PC's health and you are good to go.
I'm loving it. Playing with 5 people, throwing in one-shots where I can (the players went on a trip to a museum, where I sneakily ran Dead Light), and it's been great. The mystery is intriguing, the players love going over the investigation side of things. The fights have been tough and intense, but smooth and over relatively quickly.
Having read it twice and currently running it now, I can say it deserves the recognition of one of the best adventure campaigns ever written. The best? I dunno, but definitely up there.