I'd like to say, a little bit to notify it's ending / the end would be a good addition just due to how it's currently so abrupt, worse than the awkwardly faster flow of going down the stairs, which is likely the bigger reason of people asking if it will be completed or thinking they are missing something.
As this was a submission to Jams, you could keep the existing version, and just upload a slightly altered one that has "The End" before booting to the main menu as a separately-named download, if you wanted to keep that history of the specific Jam version.