So this tutorial by Marby shows you how to set it up so that when your character drops to 0 health, it respawns the character at the last door instead of a game over screen.
Basically the idea is character gets full health and spawns at a door when it dies, preventing the game over screen from triggering in the first place.
I imagine you can do something similar that would allow you to implement different endings. Basically you revive the character, spawn them wherever, and then give your character a token. Depending on where your character dies / what scene etc, you can have them ” respawn” at a given door and now with the token the story goes a different direction.
I’d have to actually write something to show what I’m talking about, but with Marby’s awesome trick there, it’s totally possible.