Also realised that when you "LOOK" at the top of certain stairs it wasn't giving the correct message, so that's fixed now, hopefully helps with others in future at that point!
I just finished it! 2:08 was my time! Really fun! (ps if you don't type in the final command of the game then your character walks to the end and no death triggers, I don't know if anyone has had that happen yet so idk if that's useful feedback)
I downloaded the Mac version within an hour or two of release, and in one playthrough I experienced being stuck at the end of the train with no death message appearing — I just rode into the sunset with no conclusion. (Not sure if this is something you've fixed in a more recent iteration.)