There is this moment where the game tells you, with a straight face, that you are now a "slutty mcslut" and then it throws a torture minigame at you. I think that's the whole vibe. The halloween thing is just set dressing for a fever dream where the hero gets polymorphed into some nightmare creature and has to navigate a world that runs on horny logic. The file is tiny, like 6 megs, so dont expect some huge quest. It is a short, weird trip.
The horror tag is doing a lot of work but it is more like a cartoonish gross out horror. There is a crazy girl, obviously, she is the main event. The writing is funny in a way that feels like the dev was laughing at their own jokes. Some of the puzzles are just clicking on things until the game lets you see a sex scene. I wish there was more actual gameplay but then again the game is called an adventure so maybe that is the point. The sex kitten part is not a character, it is a state of mind.
You know how in some hentai quests you get a bad end and it is just a game over screen? Here the bad ends are the content. I got stuck for a bit because I forgot to check the inventory for a key item that was not really a key. The humor is very specific, like a 4chan thread from 2016. It is unpolished on purpose, the rough edges are the aesthetic. If you need a polished experience this will annoy you. But if you want something that feels like a random itch.io upload from a dev who had a breakdown and made a porn game about it, this is that.