This is interesting to watch now considering we have PS!Outertale, and it's completely different from how people would interrupt outertale to look as well as play out. Especially since flowey is a goddamn SUPERNOVA IN HIS OMEGA FORM.
technically, flowey helps you in underworld, and has almost no changes, meaning that there is no proper fight for omega flowey and asriel also, undyne is already undyne the undying when you fight her
Technically sans wouldn’t be able to frown since he’s diagnosed with the disease that wouldn’t make him to move his face until you slash him. He can only smile which is sad since the death. His brother makes him laugh talking. He can only talk like psychically, but only little noise comes out of his mouth. That’s terrible.
The whole horrortale AU is kinda stupid, cuz in some scenes of the comic you can see that there are many dead human bodys in snow, so the monsters could've taken those souls to create a new energy source or to cross/destroy the barrier