Did you ever finish it? If not the conclusion of the game was pretty satisfying, and nothing is spoiled by being told about the door thing. It’s actually more memorable for me than the following ones, maybe because I spent so long wandering around in despair. I actually tried replaying it a little while ago but just bounced off the extremely clunky 90s design and the technical limitations. I think this remake will be a good chance to try again, and see the environments rendered nicely.