oh dear
no, the end of the game is very obvious, i think you might have encountered a bug. do you remember where you got up to?
EDIT: i just replayed it and found the transition it happens in, however looking at the project in the editor I'm having trouble recreating it. I'll have to look at it in the morning if I have time (it's late where I am).
Especially gutted that there's a problem like this where it is, the very next scene was where the 'plot' started getting good haha