I utterly hated that the text adventure parser in this did not follow the standard zmachine parser rules for things like 'x self', 'go out', 'i/inv' and so on. These conventions exist so that people don't have a miserable time with IF games because they're struggling with an obtuse parser.
I felt like I was wrestling with the stupid parser rather than being immersed in the spookiness. And there's impressive spookiness on display here! The premise is actually really cool and the ending could have been really chilling, but playing with a walkthrough open through a sheen of frustration destroyed any chance for me to be immersed even with the pitch perfect audio and visuals. Really impressive production values and polish but this one thing ruined it for me.
Also where was I supposed to get the code 1986 from, besides the aforementioned walkthrough?