I would love for an invulnerability option/cheat/potion. The final hunt and scramble for the glowing objects is too much sweat for my taste in a porn game.
Not exactly a cheat, but this will help you skip the grind ->
1. Edit the save file to give yourself a large amount of cash. (Drive c/users/you/appdata/locallow/lags/LSHR)
2. Go to the asylum map after you get a text from ryoko/regina that she knows someone to cure your ailment (basically a -ve status effect, lose to the ghosts a few times if you dont have them already)
3. In the asylum map, you'll find a hidden door that leads to a witch (Dont exactly remember where but it was probably jack hallway 1? )
4. The witch in question is a vendor offering a variety of wares, but the one you need is the crystal ball.
5. The usage of the crystal ball immediately banishes the ghost without a need for a hunt, tho its cost is a bit steep (thus the need for step 1)
6. After interacting with the witch, you'll be able to buy her wares from your truck, so you won't need to trouble yourself to go there everytime.
As i said, this is an intended feature rather than a cheat, but it does make the game alot less grindy :3
And if you already knew 'bout this, then i guess i just wasted a good bunch of my time ;(