But if a remake/remastering would take place, I know exactly how I'd do things: I'd have the Xanathar-fight take place as normal, and then an in-game cutscene plays (kinda like the resurrection ones) where someone from the surface teleports down to the party's location, makes a note of their achievement, and then offers them a ride home. The player can accept, and the game ends (Amiga-ending style), or the player can refuse, saying that they'll find their own way back to the surface and keep playing the game. The true 'ending' would then be using the Stone Gem to activate the portal leading up to the third floor, and the player finding another exit from the sewers from there, triggering an enhanced version of the Amiga-ending.
