Cursed Idea: Hazbin Hotel as an open world RPG with romance options
The only characters you can't romance at all are Charlie, Vaggie, Alastor and Vox (because he's just too fixated on Alastor)
You can start a QPR with Alastor but this is insanely hard and only works if you (1) never upset him or Rosie on that route, (2) your choices fall at least 80% in line with his twisted moral compass that you have no idea what it is, (3) you freed him and (4) you keep offering him dishes you cooked with the cannibal cookbook (obtainable from the 666 news studio) from "ingredients" you looted from enemies you killed. This only works if you chose a melee type weapon. Alternatively you can buy the ingredients from Rosie's Emporium but they're pretty expensive.
Lvl 10 friendship with Alastor rewards you by letting you scritch his ears and gives you a tail you can equip on him if he is in your party.
You can kill every sinner in hell as long as you own an angelic weapon, except for the overlords. The exception to this is Valentino, whom you can kill whenever as long as your level is high enough. He is the only boss fight that is not level- or story-locked.
You can be redeemed and go to heaven if you get 10000 heaven points by doing good deeds and helping people. If your first boss fight is Valentino, you win and choose to kill him, you get 1000 heaven points
Spending 50k at the Hellmart gets you Alastor's cane to equip on your character. If you destroy every TV at the Hellmart, you unlock a special achievement titled "Radio killed the Video Star" but it also deducts 3 friendship levels from your bond with Vox.
You can pick a romantic and sexual orientation for your character and there's an achievement called "unbridled asexual rage" that you get if you consistently murder the first 30 people who hit on you. If your character is male, this includes Angel Dust who hits on you in the tutorial.
Every story-relevant character you kill prematurely gets replaced by an egg boi. This makes the cutscenes very interesting.
Killing both Valentino and Angel Dust is recommended for players who might be triggered by the Valentino and Angel Dust questline, as they will both be replaced by egg bois with limited animation.
Romancing Valentino locks your heaven points bar until you decide to kill him.
You can get kicked out of heaven again if you commit crimes. You can make soul deals in heaven. Every soul you have comes with you to hell. Bringing Alastor's mother to hell deducts 5 friendship levels from your bond with him but unlocks a heartfelt cutscene where they reunite.
You cannot bring Emily, Sera, Adam or Lute to hell with you. Adam respawns in hell if you kill him though. Then you can forge a soul deal with him if you're smart about it.
Killing Lilith before the story forces you to do her boss fight replaces her with a giant egg boi.
Killing Lilith frees Alastor and raises your approval rating with him significantly.
Killing Rosie or his mum permanently makes Alastor hate you
One of the first dialogue options you get with Adam is (Bite him...) where you violently chomp down on his arm and he screams like a little girl
Other characters the game lets you violently bite include: Angel Dust, Sir Pentious, Vox, Valentino, Lucifer and St. Peter.
Weapons are customizable in appearance. Notable skins for weapons include: severed arm, radio on a stick, wet fish (with sound effects!), angelic spear, Cherri's bombs, Adam's axe and many more
Marrying and immediately divorcing Lucifer will lower your approval rating with Charlie
You can customize your room at the hotel. Divorcing Lucifer unlocks a special crying Lucifer-esque rubber duck that you can put on your shelf.
If your approval rating with Husk is high enough, he will keep bringing dead mice to your doorstep that you can either throw away or feed to Alastor
You can pretty much feed any being to Alastor whether raw or cooked, as long as you have it in your inventory.
Obtaining enough souls will give you access to the overlord meeting room in Carmilla's house where you can obtain "rotting severed angel head", which you can use as a special ingredient in the Jambalaya recipe from the cannibal cookbook
You can enter Vox's room during your stealth mission in the V Tower, which lets you steal several Alastor-themed decorations for your own room including the Alastor body pillow, 3 Alastor posters including the beach art of him, an Alastor figurine and a cursed cat Alastor plushie.
Every character at the hotel has one of those figurines. Collecting them gives you rewards and if you put all of them on your shelf you get a "Found Family" achievement.
You can burn Valentino's studio down during the V Tower stealth mission. Angel Dust's figurine is in his room so be sure to grab that before you burn the studio.
Other locations for the figurines include: Charlie's room (Charlie), Hotel Room in Heaven (Vaggie), Casino (Husk), Utility Closet at the "Consent" club (Niffty), nest of giant hell chicken (Pentious) and Duck Pond (Lucifer)
There's a Voxtagram function in your phone where you periodically receive new posts from the characters with comment options that they reply to. You can repeatedly be mean to Vox online. This is a running gag and Vox eventually complains on TV about getting cyberbullied.
You can turn on the little radio in the hotel lobby or get a customizable radio as a gift from Alastor that you can put in your room. You can select between playing Alastor's radio show, Alastor's radio show from when he was alive, the Hazbin Hotel soundtrack, screams and Mimzy's singing.
Achieving lvl 10 friendship with Alastor also unlocks camera mode for him. Now he no longer glitches out on photos as long as you equip an old-fashioned camera.
Romancing St. Peter lets you persuade him to smuggle you into heaven whenever you want to go.
There's a billboard near the V Tower that displays a slideshow of Vivziepop tweets where she engages in her own fandom discourse
If you keep walking ahead in the swamp in Alastor's room you eventually fall out of the map and respawn at the nearest unlocked waypoint.
You can adopt a little fawn from Alastor's swamp and a rabid raccoon you can find in a trashcan behind the hotel. If you do not take the raccoon to the vet first, there is a rabies breakout at the hotel.
You can interact with the alcohol bottles at the hotel bar and pour them down the sink. This lowers Husk's approval rating with you.
Might make a part 2 of this
