What exactly do you mean by endings? Like an end screen with text on it, that takes you back to the main menu?
Or an end screen for when you fail/die, and need to restart? Or something else?
None of those things are implemented yet, so if you have ideas how you would like them, I’m all ears.
What you currently need to do is let the actors say you won or succeeded or something, but you will remain in the game.